The purpose of this activity is for students to learn Stage 3 of the How Close? center which was introduced in grade 1. In this stage, each student picks 7 cards and chooses 4 of them to create 2 two-digit numbers. Each student adds the numbers and writes an equation. The student whose sum is closest to 100 wins a point for the round. It is recommended that at this point in the year, students begin with a target number of 50 instead of 100.
If students are not yet able to make 2 numbers that get close to 50, encourage them to choose 2 cards, make a two-digit number, and represent the number with connecting cubes. Students determine how many more cubes they need to get to 50. Then students choose the 2 cards that will have a value closest to that number.
Representation: Internalize Comprehension. Begin by asking, “Do you remember the game, How Close?” Invite students to recall strategies that helped them work within 20. Ask them to think about how the game will change when the target is 50.
Supports accessibility for: Memory, Attention, Organization
