squares after the number in blue. When you reach the tenth square, ask for student responses. Continue this activity with other numbers, until students understand how to find "ten more" on the number board.
Simple Addition and Subtraction
As an extension to the activity above, the number board can also be used to introduce basic addition and subtraction. Explain how two num- bers can be "combined", or added together, to make a bigger number, or a sum. Ask students for suggestions in finding the sum of 2 + 3. After a discussion, cover the first number (2) in blue. Count to 3, and cover the squares after the blue one in red as you count (1, 2, 3). The last num- ber covered is the sum, 5! Continue this exercise with other addition problems.
Now explain to children that amounts can also be "taken away", or sub- tracted, from larger numbers. Use the number board to illustrate a sub- traction problem like
(6 - 4 = 2). Continue this exercise with other subtraction problems.
Patterns and Graphs
Use the reverse side of the number board for additional patterning activities. Ask the children to follow a pattern or see what designs they can create on their own!
Create bar graphs by grouping tiles into rows and columns on the back of the number board.
For additional 100’s Number Board activities, try LER 0337,
Also from Learning Resources:
LER 0373
LER 0377
LER 0193 Opaque Counters
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LER 1331
Grades
•Number Patterns
•Sequencingi Skillsills
•Basicic Math Concepts
•Placel Valuel
