Names:

Fatimah Abdul-Zahir, Gina Davies, Evelynn Jackson, Shannon Siniawski

Grade Level: PreK-2

Content Area: Numbers/ Computation

PA standards addressed: 2.1.3 K and 2.2.3 A

NCTM standard addressed:

Understand meaning of operations and how they relate to one another.

Problem Name: Counting Cookies

Problem:

Aaron’s mom baked 8 cookies. Megan’s dad baked some cookies, too. They had 15 cookies in all. How many cookies did Megan’s dad bake?

Directions:

Draw a picture or write in words how you can get the answer.

Write the number sentence. ______________________

Write your answer. _______ cookies

Write the fact family for your number sentence.

Solutions for Counting Cookies
A.	Students may draw one of the following pictures or provide one of the following explanations listed below the pictures.

			__ __ __ __ __ __ __
You have to subtract 15-8=7. Start with 8 and count on until you get to 15. I counted on my fingers.
B.	15-8=7 or 8+7=15
C.	7 cookies
D.	Students may write one of the following:
		7, 8, 15 8, 7, 15 15, 7, 8 15, 8, 7 or all four of the following: 7+8= 15 8+7= 15 15- 7= 8 15- 8=7

Rubric for Counting Cookies

Numbers/ Computation

5		A, B, C, and D are all complete and correct.
4		A is correct along with two of the other choices. (either B, C, or D)
3		A is correct along with one of the other choices. (either B, C, or D)
2		At least one of B, C, or D is correct.
1		Attempted one of A, B, C, or D.
0		No Response

A is correct along with two of the other choices. (either B, C, or D)