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National Council of Teachers of Mathematics

100 Square Jigsaw. This interactive Flash puzzle helps children develop number sense and an understanding of our decimal number system. A 0-99 square has been cut into 11 irregular pieces which the user re-assembles. A printable (pdf) version is included along with questions for Getting Started and a Teachers’ Resources page with implementation suggestions. (Lower Primary Grades, K-2)

Data and Information – A collection of websites compiled by Open Educational Resources, on such topics as statistics and data analysis.

The Math Mutation. Math Mutation is a short podcast for people of all ages, where we explore fun, interesting, or just plain weird corners of mathematics that you probably didn’t hear in school.

Math Ref. (Apple version. Android version.) Math Ref is an award winning education app. Browse over 1,400 formulas, figures, and examples to help you with math, physics, chemistry and more. Use an expanding list of helpful tools such as a unit converter, quadratic solver, and triangle solver to perform common calculations.

Math Ref Free. (Apple version. Android version.) Math Ref Free is a free version of the award winning education app Math Ref. This app gives you just a sample (over 700) of the over 1,400 helpful formulas, figures, tips, and examples that are included in the full version of Math Ref. So, if you’re a student, teacher, or need math for work and want to try before you buy, this app is for you.

Mathematical Modeling. A collection of websites on mathematical modeling by Open Educational Resources.

Mathematics Help from Info Please.

Mathematical Practices. A collection of websites compiled by Open Educational Resources on Mathematical practices.

MathSpace. ( Windows, Android and Apple). Mathspace is a free app (there are in app ads) that allows students to write on tablets to solve math problems, and to revive feedback right away about how they are doing.

Quick Graph. Quick Graph plots high quality 2D and 3D mathematical expressions. Graphs can be shaded with custom colors and in 3D the lighting is enabled to demonstrate the depth of the surface. Available at the App Store.

Real World Math. A collection of practical math applications from Open Educational Resources.

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