Date: August 8, 2000
Grade Level(s): 4
Subject(s): Mathematics/Arithemetic
Duration: 30-45 minutes
Description: This lesson utilizes edible manipulatives provide motivation for listening, and to teach initial awareness of the law of averages.
Goals: NEW YORK STATE STANDARD:
Mathematics, Science and Technology: Standard 3. Students will understand mathematics, and become mathematically confident by communicating reasoning mathematically, by applying mathematics in real-world settings, and by solving problems through the integrated study of number systems, geometry, algebra, data analysis, probability, and trigonometry.
Objective(s): Students will:
Procedure:
Setup:Prearrange students into groups of 5 or less.
Call to Order:
5 count to have nothing but a pencil on your desk.
Advance Set:
(Activate Schema)
Last week we learned how to divide, and most of you did quite well at this! Today we are going to use division in another part of math---finding averages.
Does anyone know what an average is? (look for procedure answer)
Demonstrate 1 average problem on the board and LEAVE IT THERE!
13, 14, 10, 7, 3
Main Activity
1. I am going to pass out a bag of cookies. You may not eat them until I tell you! (What did I just say about the cookies?) Please place them in the left corner of your desk.
2. <Pass bag around>
3. I like statements ….
4. <Pick student to hand out work sheets>
5. … is passing out the worksheets. While she is passing out the worksheets I would like for you to count all the chocolate chips in your cookies. (Allow 3-4 minutes)
6. Please place the number of chips you found in the box on your paper marked “My Chips!”
7. Please share your number of chips with everyone in your group. The order of how they are written is not important.
8. Plugs in the numbers you wrote in the boxes in the section marked “ADD” and add the numbers up.
9. Move your total number of chips to the slot in the division section marked: TOTAL # of CHIPS.
10. Divide and find your average number of chips.
Closure:
You have know found the average of the amount of chips in the cookies. Let's see how close they were. <Call for each group to give their totals.> You may now eat your cookies.
Ask for the average of each group. Write these on the board. Add them and divide them.
Talk about average. How many had exactly (the average)? If you had more than the average on the board, you made out! How many had more? If you had less than the average, do you feel a little shorted? How many had less?
I like statements …
Independent Work:
Page 239 9 - 14
Teacher observation and grading of independent work.
EXTENSION:
Blend two groups together.
Blend whole class together.