Resources and Tools for Elementary Math Specialists and Teachers

Common Core State Standards for Mathematics

Grade(s) K resources related to the following standard:
Number and Operations in Base Ten
Work with numbers 11—19 to gain foundations for place value.
1. Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

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In this interactive Flash applet students practice ordering numbers by dragging shirts with numbers to the correct position from lowest to highest on a clothesline. Four levels cover numbers 1-5, even numbers to 10, odd numbers to 10, and a selection of numbers from 1-20.
Activity, Interactive Media
Grade Level: K, 1