Discrepant+events

using discrepant events in the classroomPost:[|using discrepant events in the classroom] Author:Sunita BaliPosted Date:November 22, 2011 4:36 PMStatus:Published Hi Everyone, Please see the attached file for Discrepant events-Biology. Thanks Sunita
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3019945_1/Grade%20and%20Curriculum%20Expectation%20discrepant%20events%20-11.docx"]] Grade and Curriculum Expectation discrepant events -11.docx (18.91 KB)

Reply Quote [| Mark as Read]

Thread:Using Discrepant Events in Chemistry-11Post:[|Using Discrepant Events in Chemistry-11] Author:Narjis FatimaPosted Date:November 21, 2011 11:08 PMStatus:Published The Cartesian Diver : This discrepant event activity focuses on the nature of liquids and gases and explains the relationship between pressure and volume of a confined gas based on Boyle’s law and also how this influences density and floatation, **Gases and Atmospheric Chemistry in SCH 3U course** umanitoba.ca/.../resources%20for%20**teachers**/Cartesian%20Divers%..

Synthesis of Magnesium Oxide**:** This activity focuses on the relationship between the types of chemical reactions for example, synthesis, single and double displacement and also the nature of the reactants, **Chemical Reactions** **,SCH 3U course** [|www.nipissingu.ca/education/.../][|**discrepant**][|_][|**events**][|/][|**discrepant**][|kevin.d]...

The Collapsing Can: This activity helps students to investigate the relationships among the pressure, volume, and temperature of a gas. [|www.nipissingu.ca/.../][|**discrepant**][|_][|**events**][|/][|**discrepant**][|_][|**event**][|mike.doc] Colors of the Rainbow: It focuses on the “Physical Properties of Matter” by describing the properties of gases, liquids, solids which includes density, compressibility, diffusion. A discrepant event on polar vs. non-polar liquids for grade 11 chemistry teaching is a great way to show students, that this would include density of water and oil, the water is a polar liquid and the oil is a non-polar liquid. A polar and a non-polar liquid will never completely mix together (i.e. they will not diffuse together). **Solutions and Their Properties ,SCH 3U course** umanitoba.ca/.../**Grade**%208/.../8-3-06%20-... []

Reply Quote [| Mark as Read]

Thread:Using Discrepant Events in ChemistryPost:[|Using Discrepant Events in Chemistry] Author:Swati KulkarniPosted Date:November 20, 2011 7:09 PMStatus:Published Please See the attachment for 'Using Discrepant Events in Chemistry'. Swati
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3015203_1/discrepant%20events%20chemistry.doc"]] discrepant events chemistry.doc (29.5 KB)

Reply Quote [| Mark as Read]

Thread:Teaching students using discrepant events in Biology -SBI3UPost:[|Teaching students using discrepant events in Biology -SBI3U] Author:SUZETTE MCLEAN-FLETCHERPosted Date:November 22, 2011 12:51 AMStatus:Published Hi, Attached is a document outlining examples of discrepant events I would use in teaching the SBI3U course. Suzette
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3018871_1/Teaching%20Students%20Using%20Discrepant%20Events.docx"]] Teaching Students Using Discrepant Events.docx (18.208 KB)

Reply Quote [| Mark as Read]

Thread:SPH3U - Grade 11 PhysicsPost:[|SPH3U - Grade 11 Physics] Author:Paul PlazekPosted Date:November 19, 2011 9:01 PMStatus:Published __ SPH3U Grade 11 Physics – University Preparation __


 * Energy and society **

D3.8 distinguish between and provide examples of conduction, convection, and radiation Energy and society D3.7 explain, using the kinetic molecular theory, the energy transfer that occurs during changes of state

// Ice Melting Blocks //

2 small blocks are felt by the students. One feels warm and the other very cold. An Ice cube is placed on each one. The ice cube on the warm block melts very slowly and the one on the cold blocks melts very quickly. The 2 blocks are made of pressed Styrofoam and aluminum respectively.

This event illustrates the idea of heat transfer and heat conduction.

[]


 * Kinematics **

B2.4 conduct an inquiry into the uniform and non-uniform linear motion of an object (e.g., use probeware to record the motion of a cart moving at a constant velocity or a constant acceleration; view a computer simulation of an object attaining terminal velocity; observe a video of a bouncing ball or a skydiver; observe the motion of a balloon with a small mass suspended from it) [PR]

// Falling Book and Paper //

Have the students predict what will happen to the rate of decent of a piece of paper when it is placed on top of a heavy book and both are dropped together. The paper will fall at the same rate as the book and appears to stick to the top of the book. Essentially the paper is falling in the absence of air friction and this event demonstrates that removing the friction caused by air changes the kinematics for “light” objects. However it really has little practical effect at our level of accuracy on heavy aerodynamic ones like cannon balls.

[]


 * Forces **

C2.4 analyse the relationships between acceleration and applied forces such as the force of gravity, normal force, force of friction, coefficient of static friction, and coefficient of kinetic friction, and solve related problems involving forces in one dimension, using free-body diagrams and algebraic equations (e.g., use a drag sled to find the coefficient of friction between two surfaces) [AI, C]

// Yardstick Center of Mass //

This simple event illustrates the relationship between static/kinetic friction and the force of gravity. The meter stick is placed on 2 fingers at any points on the ruler so that it balances. As the fingers are brought together they will always meet at the center of gravity. This occurs because the finger furthest from the center will always have the least downward force on it from gravity and so the least static and kinetic friction. It will therefore always move before the other finger does when both are pulled toward the center.

http://physicstricks.wikispaces.com/Mechanics


 * Waves and sound **

E3.2 explain the components of resonance, and identify the conditions required for resonance to occur in vibrating objects and in various media (e.g., with reference to a musical instrument, a child on a swing, the Tacoma Narrows Bridge)

// Singing Aluminum Rod //

This event involves the production of a very loud pure sound from simply stroking an aluminum rod. The stroking with resin on the fingers causes the rod to vibrate in resonance with the vibrations produced by your fingers. If held in the middle it vibrates at the first harmonic. The discrepant nature of this is the magnitude and purity of the sound produced from such a simple motion.

[]


 * Electricity and Magnetism **

F2.7 investigate electromagnetic induction, and, using Lenz’s law, the law of conservation of energy, and the right-hand rule, explain and illustrate the direction of the electric current induced by a changing magnetic field [PR, AI, C]

This event involves dropping a magnet down a copper pipe. Although copper is not magnetic, the magnet slows down considerably while falling due to the induction of currents in the pipe which then induce magnetic fields that slow the descent of the magnet according to Lenz' Law.

[]

Reply Quote [| Mark as Read]

Thread:SBI3U Discrepant EventsPost:[|SBI3U Discrepant Events] Author:Mary MichaelPosted Date:November 22, 2011 5:27 PMStatus:Published Confusing evidence with causation: It is tempting to use phrasing such as "Humans and chimpanzees are related because they share similar features and genetic sequences." However, this statement is misleading because it confuses evidence with cause. A better way to put this is to say, "Similarities shared by humans and chimpanzees support the idea that they are related." Having similar features does not cause relatedness. Relatedness is due to common ancestry. [|http://evolution.berkeley.edu/evolibrary/teach/912pitfalls.php#2d] Yes or no? Can all people detect the same flavours? Students will probably answer that this is true. Scientists know of four different tastes—sweet, sour, salty, and bitter—that are recognized by the taste buds on different areas of the tongue. Some people, however, have “taste blindness” and cannot taste certain bitter compounds. PTC (phenylthiocarbamide), sodium benzoate, and thiourea are all chemicals that these people cannot taste. Whether or not people can taste these compounds is determined by heredity. [] Show students various plants that you have had growing in your classroom (e.g. in advance, have plants growing in various situations---a pot on its side, a pot hanging upside-down, etc. Invite students to speculate on the relationship between plant growth and the force of gravity. Does gravity affect plant growth? Have students talk about designing an experiment that could find an answer to this question. []
 * __EVOLUTION__**
 * Are humans and chimpanzees are related?**
 * __ANIMALS: STRUCTURE AND FUNCTION__**
 * Does It All Taste the Same?**
 * __PLANTS: STRUCTURE AND FUNCTION__**
 * Gravity and Plant Growth**

Reply Quote [| Mark as Read]

Thread:SBI3U - Discrepant EventPost:[|SBI3U - Discrepant Event] Author:Jennifer McFarlanePosted Date:November 22, 2011 12:01 AMStatus:Published **REFERENCE:** ( 1992). [|Biological Bafflers, Discrepant Data, Fascinating Facts and Quizzical Quandaries]. The American Biology Teacher, 54(5), 263-67. Ask students to research and share answers: Blue Whales, chameleons, crocodiles, mosquitos, spiders, etc. Students will realize that even though all animals must obtain and digest food, different animals have different bodily structures that function to digest food in different ways. Inquiry Through Discrepant Events Grade 11 BioPost:[|Inquiry Through Discrepant Events Grade 11 Bio] Author:Emily ColangeloPosted Date:November 19, 2011 10:33 AMStatus:Published**Attachment:** Inquiry Learning Through Dicrepant Events GR11 BIO.docx (197.691 KB)
 * UNIT: SBI3U -- Animals: Structure and Function**
 * BIOLOGICAL BAFFLER:** All animals obtain and digest food. But what are some unique ways animals go about doing this?
 * DESCRIPTION OF ACTIVITY:**

Reply Quote [| Mark as Unread]

Thread:GRADE 11 BIO- Discrepant EventPost:[|GRADE 11 BIO- Discrepant Event] Author:Oksana HrycykPosted Date:November 21, 2011 3:54 PMStatus:Published UNIT: Grade 11 - Plants: Anatomy, Growth and Function and/or Genetic processesDISCREPANT EVENT: Corn seeds germinate faster in darkness. REFERENCE MATERIAL: Wright, E L. (1995). Discrepant Event Demonstrations. The Science Teacher, 62(1), 24-28. BRIEF DESCRIPTION: Each group of students is given three different corn seeds to plant: heterozygous for chlorophyll (albino carrier), homozygous recessive for albinism (albino), and heterozygous for tallness (shortness carrier). Students record observations of physical characteristics of the seeds, as well as design experiments to determine whether or not the corn plants will grow the same and look the same in light and dark conditions. The results is that all the corn plants grow faster in dark conditions and that the plants look different from one another in terms of colour and height.

Reply Quote [| Mark as Read]

Thread:Fire Sandwich-ChemistryPost:[|Fire Sandwich-Chemistry] Author:Louise DaurioPosted Date:November 19, 2011 9:30 PMStatus:Published The “Fire Sandwich” could be used in SCH4U D. Energy changes and rates of reaction. In this event, a flame from a Bunsen burner is “sandwiched” between two wire screens. It appears that the flame has been captured from the Bunsen burner and is burning between the screens only. This link contains a description and procedure for presenting this discrepant event as well as an explanation of the science and a real world application: [] This links to a video demonstrating the discrepant event and provides an explanation of the science involved. []

Reply Quote [| Mark as Read]

Thread:Discrepant Events - SNC 4MPost:[|Discrepant Events - SNC 4M] Author:Lesley WrightPosted Date:November 21, 2011 9:20 AMStatus:Published Unit 2: Medical Technologies - This event talks about radio activity, and how all radioactive atoms are dangerous to humans, and should be avoided. This is false, because radioactive materials are used in radiation as well as chemotherapy as cancer-fighting methods. Also, radioactive iodine is used to regulate the thyroid. (I made this one up!)Unit 3: Pathogens and disease - Stirring Pot #7, p208 - this event talks about the circulatory system being the only collector of fluid in the human body, which is false. The lymphatic system plays a major role in collecting fluid from extremities. This could lead into a discussion of the lymphatic system, a major player in the immune system. Wright, E L. (1992). Stirring the Biology Teaching Pot with Discrepant Events. The American Biology Teacher, 54(4), 205-11. Unit 4: Nutritional Science - Stirring Pot #5, p208 - This event talks about using cow's milk as a solution to the starvation problem in Africa. This is false, because people from this area lack the enzyme required to break down lactose into its two base sugars. Wright, E L. (1992). Stirring the Biology Teaching Pot with Discrepant Events. The American Biology Teacher, 54(4), 205-11.

Unit 5: Science and Public Health - Stirring Pot #18, p210 - This event talks about blood transfusions, and whether or not it would be safe to transfer blood between two humans. This is false, because blood has to be screened for blood types first, and of course, different diseases that are transmissible by blood also need to be ruled out. Wright, E L. (1992). Stirring the Biology Teaching Pot with Discrepant Events. The American Biology Teacher, 54(4), 205-11. Unit 6: Biotechnology - Stirring Pot #1, p208 - This event talks about growing corn in the dark, proposing that plants can grow without sunlight. This is true, some grades of corn can grow without sunlight. This could lead into a discussion about cloning corn that has desirable traits for a certain climate. Wright, E L. (1992). Stirring the Biology Teaching Pot with Discrepant Events. The American Biology Teacher, 54(4), 205-11.

Reply Quote [| Mark as Read]

Thread:Discrepant Events - SCH 3UPost:[|Discrepant Events - SCH 3U] Author:Temi DavidsonPosted Date:November 22, 2011 2:58 AMStatus:Published For handouts to each of the discrepant events, check out the following []

Chemistry Grade 11 University - SCH 3U - 5 Units 1. Matter, Chemical Trends and Chemical Bonding Synthesis of Magnesium Oxide - students are able to witness the bonding of two substances to produce 1 substance.

2. Chemical Reactions Combustion of Sucrose - students witness the combustion of a hydrocarbon (sucrose) with potassium chloride

3. Quantities in Chemical Reactions Ethanol Rocket - students watch the combustion of ethanol and investigate the quantities of the end products

4. Solutions and Solubility Disappearing Liquids - students observe how the mixture of water and alcohol actually reduces the volume of the end product instead of increasing the product

5. Gases and Atmospheric Chemistry The Collapsing Can - once a soft drink can has been heated with water and the collapses once placed upside down in cold water, this demonstrates gas laws and illustrate the pressure, volume and temperature of a gas.

Reply Quote [| Mark as Read]

Thread:Discrepant Events in SCH3UPost:[|Discrepant Events in SCH3U] Author:Rajmeet VirdiPosted Date:November 21, 2011 4:58 PMStatus:Published
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3017495_1/Discrepant%20Events%20-%20Chemistry.docx"]] Discrepant Events - Chemistry.docx (19.406 KB)

Reply Quote [| Mark as Read]

Thread:Discrepant Events in SBI4UPost:[|Discrepant Events in SBI4U] Author:Sara AustinPosted Date:November 21, 2011 8:39 PMStatus:Published Discrepant Events: SBI4U Unit 1: Metabolic Processes: Resurrection plant – looks dead without water (can survive for years without water) but returns to full greenery within hours of being placed in water. From: =Even More Brain-Powered Science: Teaching and Learning With Discrepent Events= By Thomas O'Brien, (2011) NSTA, New York. Unit 2: Homeostasis: Experiments and Observations in “An Heated Room” These experiments (in the 1770s!)had people entering and staying in rooms heated to close to the boiling point of water (210 'F) – and they were able to stay in the room without any adverse effects other than increased breathing and some hand trembling. Experiments and Observations in an Heated Room By Charles Blagden, M. D. F. R. S. Charles Blagden Philosophical Transactions (1683-1775)

Vol. 65, (1775), pp. 111-123 Published by: The Royal Society Stable URL: http://www.jstor.org/stable/106183 Idea from McGraw-Hill Biology 12 p.104 (the mention of Dr. Charles Blagden) Unit 3: Molecular Genetics: Couldn't really find a discrepant event, but this animation is very cool and definitely challenges the static images in our textbooks. The animation shows a cell using 3D protein structures, showing intracellular components – could focus on protein synthesis segment, really the whole thing is excellent. How do proteins get made and secreted within in the cell? How do they get out if they are secreted? How does the cell make proteins, and where? Show animation: The Inner Life of a Cell [] Unit 4: Evolution: Survival of the Sneakiest: Comic, with discussion This comic follows the efforts of a male cricket as he tries to attract a mate, and in the process, debunks common myths about what it means to be evolutionarily "fit." I would offer part of the comic, stop for a discussion of what will happen next, then move into the next section. [] Unit 5 Population Dynamics: Case Study: Too Many Moose on the Loose [] You would think that introducing moose to Newfoundland was a good idea. Well, maybe not...

Reply Quote [| Mark as Read]

Thread:Discrepant Events in BiologyPost:[|Discrepant Events in Biology] Author:John MirandaPosted Date:November 20, 2011 1:59 PMStatus:Published To find discrepant events in Biology is hard. There is so much in physics and even chemistry. These are the ones I could find. __ Peanuts are nuts. __ Students will likely answer that peanuts are certainly nuts. In fact, peanuts are a __legume__ that grows in the ground. Most nuts grow on trees. In India and other tropical countries, peanuts are called __ground nuts__//.//
 * 1) True or false?**

2) Dinosaurs are killing the planet. This is a discrepant event of my own. __Men are using dinosaurs to destroy the planet. Is the teacher crazy?__ Whenever I ask this question students rapidly respond "You're crazy!!!" Then I move on by saying "If I can prove I am not crazy, you owe me a late, if you prove me that I am not crazy by using scientific analysis, then I will buy you doughnuts". Students then struggle to find the solution, if they don't find the link between dinosaurs and fossil fuel, I provide hints. If they find the relation, then they move on to global warming and carbon dioxide and the extinction of species and so on. When this happens students feel accomplished and satisfied not only for the doughnut but also because they learned a concept on their own. Other discrepant event can be created by using the following links. But they are not as amazing as those than can be used in Physics or chemistry. //Links: []//

//Nervous systems and specialized cells.// //[]//

Reply Quote [| Mark as Read]

Thread:Discrepant events- grade 11 biologyPost:[|Discrepant events- grade 11 biology] Author:Ezgi CetinkayaPosted Date:November 22, 2011 12:08 PMStatus:Published Attached you will find my file on grade 11 biology discrepant events. Thank you.
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3019420_1/Discrepant%20Events%20Grade%2011%20Biology.doc"]] Discrepant Events Grade 11 Biology.doc (34 KB)

Reply Quote [| Mark as Read]

Thread:Discrepant Events - Gr 11 ChemPost:[|Discrepant Events - Gr 11 Chem] Author:Wendy LouisPosted Date:November 20, 2011 3:09 PMStatus:Published
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3014542_1/Discrepant%20Events%20Activities.docx"]] Discrepant Events Activities.docx (17.801 KB)

Reply Quote [| Mark as Read]

Thread:Discrepant Events for SBI3U and SBI4UPost:[|Discrepant Events for SBI3U and SBI4U] Author:Katarzyna HirniakPosted Date:November 20, 2011 2:51 PMStatus:Published glass bottle bowl sugar water Procedure: Step 1. Make a runny yeast mixture by adding 2 teaspoons of dried yeast and 2 Tablespoons of water. Step 2. Add 1 teaspoon of sugar to the yeast mixture and stir. Step 3. Pour mixture into glass bottle and put balloon over the opening of the bottle. Step 4. Put bottle into a bowl that contains warm water. Let bottle sit for 15 minutes. What Happens? As the yeast starts to "feed" on the sugar, it produces Carbon dioxide gas. The gas moves up the bottle and blows the balloon up.
 * 1. SBI4U Cellular Processes - Cell respiration - __Yeast Comes to Life__ demonstration**Materials: balloon 1 packet of dried yeast

**2. SBI4U Biochemistry – __Protein Denaturation__ Demonstration** à denaturing Milk into plastic []

**3. SBI4U Homeostasis – __Eating Nails for Breakfast__ Demonstration** à the importance of iron in your diet [|http://www.csun.edu/~lsh681/coursework/695/discrepant%20event/Discrepant%20Event.html]

à some students may believe that their blood can be donated to any other person. This type of scenario may be introduced prior to having them conduct an inquiry-based activity where they learn about blood typing and therefore come to understand which type of blood can be donated to which person. This activity can be extended by having students complete the below blood typing lab. []
 * 4. SBI4U Molecular Genetics – Blood typing lab**

**5. SBI3U Plants: Anatomy, Growth and Function – observing a plant (onion cell) under the microscope and identifying key organelles present.** à Students will notice that they are not able to find the chloroplast in spite of knowing that plant cells contain chloroplasts. This allows them to think-pair-share to come up with the explanation. à students can be shown examples of species among which sexual reproduction is considered a “fatal attraction”. Below is an example of a video illustrating a Mantis female biting off her mate’s head during copulation. []
 * 6. SBI3U Evolution – evolutionary advantage of sexual reproduction over asexual reproduction or is it?**

**7. SBI3U Diversity of Living Things __or__ Animals: Structure and Function - Bacteria** The video below illustrates to students that not all bacteria are “bad” for you. []

Reply Quote [| Mark as Read]

Thread:discrepant events for chemistryPost:[|discrepant events for chemistry] Author:Jiwei LiPosted Date:November 21, 2011 9:24 AMStatus:Published 1. The Great Bowling Ball Float-Off These activities which can be adapted for any class investigating the physical property of density, addresses both using an interactive, cross-disciplinary, open-ended investigation centered on determining mathematically whether a bowling ball will sink or float. Journal of Chemical Education (September 2004), 81 (9), pg. 1309 ** permalink: ** []

2. Using Limiting-Excess Stoichiometry to Introduce Equilibrium Calculations: A Discrepant Event Laboratory Activity Involving Precipitation Reactions This "discrepant event" provides a motivating laboratory opportunity in which to introduce the concept of equilibrium, equilibrium calculations, and //K// sp as reasonable explanations of the results Journal of Chemical Education (April 2002), 79 (4), pg. 474   **Permalink:** []

3. Dust Can Explosion – Lycopodium Powder Combustion

This activity shows the relationship between the rate of a reaction and the surface area available for the reaction.

[]

4. Recrystallization of Sodium Chloride with HCl This activity illustrates: Solubility equilibrium of solids, Le Châtelier’s Principle in Chemical Equilibrium , Common ion effect. [|http://www.csun.edu/~ml727939/coursework/695/common%20ion%20effect/recrystallization%20of%20NaCl%20solution%20with%20HCl.htm] Also, the following website provides many useful discrepant events for science subject: http://www.nipissingu.ca/education/geraldl/sciencegeneral/discrepant_events.htm

Reply Quote [| Mark as Read]

Thread:Discrepant events: SPH3UPost:[|Discrepant events: SPH3U] Author:Satinder VirdiPosted Date:November 22, 2011 12:27 PMStatus:Published Kindly see the attached file.Regards. Satinder Virdi.
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3019452_1/Discrepant%20Events%20-%20Physics.docx"]] Discrepant Events - Physics.docx (22.867 KB)

Reply Quote [| Mark as Read]

Thread:Discrepant event-Physics, Grade 11Post:[|Discrepant event-Physics, Grade 11] Author:Sonu BhutaniPosted Date:November 19, 2011 3:21 PMStatus:Published COURSE: PHYSICS, Grade 11(SPH3U)

UNIT: ELECTRICITY ANG MAGNETISM


 * Discrepant event demonstration associated with unit: **

Static City - Static electricity in the environment


 * Reference Material: **

Wright, E L. (1995) Discrepant Event Demonstrations. The Science Teacher, 62(1), 24-28. []


 * Description of the event: **

__ Exploration __ Place an inflated balloon against a wall and release it. The balloon will stick to the wall. Next, inflate a second balloon, tie it off with string, and rub it briskly on the wool. This time, hold both balloons by their strings and bring them close together. They will move away from each other. __ Concept Introduction __ The nucleus of an atom, in general, is composed of protons and neutrons. The nucleus is surrounded by clouds of electrons. Whenever most objects are left undisturbed for an unspecified length of time, their protons and electrons are equal in number and the objects are regarded as having balanced electrical charges.

In the above discrepant event, when the balloon is rubbed on the wool, the balloon picks up excess electrons from the wool. Now the balloon is regarded as being negatively charged. The wall may be regarded as a neutrally charged surface. Both positively and negatively charged objects are capable of being attracted to neutrally charged objects. The balloon was attracted to the wall surface, and thus, stuck to it. The two balloons moved away from one another because the similar charges they were carrying repelled each other. Like charges repel, unlike charges attract. In both cases, static electricity was at work.

Reply Quote [| Mark as Unread]

Thread:Discrepant Event in biologyPost:[|Discrepant Event in biology] Author:Qiumin HuangPosted Date:November 21, 2011 4:25 PMStatus:Published
 * Attachment:** [[image:https://portal.utoronto.ca/images/ci/ng/cal_year_event.gif caption="File" link="@https://portal.utoronto.ca/@@/1B5F307AA7B3612AB37F70BE2768EC01/courses/1/Fall-2011-EAQ1310Y-F-Fall-2011-EAQ1300Y-F-Fall-20/db/_3017427_1/Discrepant%20Event1122.doc"]] Discrepant Event1122.doc (30 KB)

Reply Quote [| Mark as Read]

Thread:Discrepant Event by Emily colengeloPost:[|Discrepant Event by Emily colengelo] Author:Riffat AsifPosted Date:November 22, 2011 5:52 PMStatus:Published Hello Emily The discrepant event to introduce structure and function of seed promotes critical and creative thinking among students and motivates them to plan further inquiry into other factors that affect plant growth. Thanks for your input. Riffat Asif

Reply Quote [| Mark as Read]

Thread:discrepant enentPost:[|discrepant enent] Author:Riffat AsifPosted Date:November 22, 2011 5:41 PMStatus:Published Hello Ezgi The decrepant event regarding the anatomy of the Eye is really interesting, as well as the CAT LAB and Inheritance. It motivates the students to use technology in their studies and research. Riffat Asif

Reply Quote [| Mark as Read]

Thread:Chemistry 11, 12Post:[|Chemistry 11, 12] Author:Tatiana VrabiePosted Date:November 19, 2011 8:51 PMStatus:Published [] Ethanol and water mixture shows less volume than initial liquids.
 * 1-9 **
 * 1. Disappearing Liquids ** by Rubina Atcha. ** 12U Structure and Properties of Matter **

Gas pressure and Temperature.
 * 2. The Collapsing Can ** by Mike McAllister. ** 11U Gases and Atmospheric Chemistry **


 * 3. Synthesis of Magnesium Oxide ** by Kevin Hilderley. ** 11U Matter and Chemical Bonding **
 * Mg ** ribbon is burned (oxide is weighted), compare to burning of wood, sugar..

Ethanol burning and water produced.
 * 4. Ethanol Rocket ** by Chris VanParys. ** 11U Hydrocarbons and Energy **

Chang the color of dichromate solution by reaction with ethanol (redox reaction).
 * 6. Alcohol Breath Analyzer ** by Marie Morin-Strom. ** 12U Electrochemistry **

Surface area and the rate of reaction
 * 7. Lycopodium Dust Explosion ** by Bob Hosken. ** 12U Energy Changes and Rates of Reaction **

Water moves by the pressure created in chemical reactions (ammonia dissolves in w2ater). At equilibrium the flow of water will stop.
 * 8. The Ammonia Fountain ** by Adam Orth. ** 12U: Chemical Systems and Equilibrium **

Colourful and unexpected reactions of neutralization and precipitation
 * 9. Water to Wine to Milk ** by Gerald Laronde. **11U Solutions and Solubility**

[|http://www.csun.edu/~ml727939/coursework/695/common%20ion%20effect/recrystallization%20of%20NaCl%20solution%20with%20HCl.htm] Speed crystallization of NaCl from saturated solution by adding HCl.
 * 10. 12UChemical Systems and Equilibrium **

[] Geometry of methane does not correspond to the atomic orbitals of carbon spatial geometry. Nelson, Chemistry 11, p.320. Solubility of Calcium Hydroxide decrease with temperature ‘against the rules”
 * 11. 12U Organic Chemistry **
 * 12. 11U Chemical Reactions **

Video [] demo “the rate vs conc.”
 * 13. 11U Quantities in Chemical Reactions **