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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Five Frame

For Students Pre-K - 1st Standards
Count the amounts given to find the total. Five different games are available to practice counting and combining amounts.
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Circle Grapher

For Students 9th - 10th
A computer applet that will draw any circle graph with student's data input.