The correct option is
A Solution: Option C
Say: Let's read the question.
Ask:
What information do we get from the question?
Ans: Sunglasses:
7, Flip-flops:
4
What do we need to find out?
Ans: We need to correctly identify the number frame that shows the total number of items.
How can we find the total number of items?
Ans: We need to add
7 and
4 to find the total number of items.
What is the total?
Ans:
11
How can we identify the correct number frame?
Ans: The number frame with
11 counters will be the correct answer.
Hence, option C is the correct answer.
WB: If required, use the whiteboard to draw the number frame and write the equation.
Probing Question:
Q. How many flip-flops should be reduced so that the total number of items can be represented in a 10-number frame? Why?
A: 1, because
7+3=10.