Lesson 2-11

LET'S BUILD Compare Groups to 10 by Matching and Using Numbers

For more help with this lesson, view the Visual Learning Animation or the Another Look Video.

MATH HELP AT HOME

Sample Additional Practice Exercise 1

Count the cubes, write the numbers to tell how many, and then mark an X on the number that is less than the other number.

Two groups of cubes in 10 frames and a number next to each group. First group shows, cube, cube, cube, cube, cube, cube, cube, cube. Number 8 is written next to it. Second group shows, cube, cube, cube, cube, cube, cube. Number 6 is written next to it. An X is marked on the number 6.

Count the cubes in the top group: 1, 2, 3, 4, 5, 6, 7, 8. Write 8. Count the cubes in the bottom group: 1, 2, 3, 4, 5, 6. Write 6. There are fewer cubes in the bottom group, so 6 is less than 8. Draw an X on the 6.

HOME ACTIVITY

Make Bigger and Smaller Groups

MATERIALS

Small Objects

ACTIVITY

Show a group of up to 10 objects, such as buttons. Ask your child to show a group of objects that is greater in number than your group. Repeat with a group that is less in number than your group of objects.