A tessellation is a repeating pattern of polygons that covers a plane with no gaps or overlaps. What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can ...

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This tool allows you to practice multiplying single-digit numbers. Click on any of the blue squares to show a product. Double-click on any displayed product to hide it behind a blue square again.

The Common Core State Standards (CCSS) are a set of academic standards in mathematics and English language arts/literacy (ELA) developed under the direction of the Council of Chief State School ...

Formative assessment is any assessment task designed to promote students' learning. These tasks give both teachers and students feedback, so that teaching and learning activities can be altered ...

This activity allows the user to enter a set of data, plot the data on a coordinate grid, and determine the equation for a line of best fit.

Thinking about numbers using frames of 10 can be a helpful way to learn basic number facts. The four games that can be played with this applet help to develop counting and addition skills. (This ...

These grade-band specific professional learning modules are focused on the Effective Teaching Practices and Guiding Principles from Principles to Actions: Ensuring Mathematical Success for All.

This updated joint position of the Association of Mathematics Teacher Educators (AMTE), the Association of State Supervisors of Mathematics (ASSM), NCSM: Leadership in Mathematics Education (NCSM) and ...

Use this tool to strengthen understanding and computation of numerical expressions and equality. In understanding equality, one of the first things students must realize is that equality is a ...

recognize the attributes of length, volume, weight, area, and time; compare and order objects according to these attributes; understand how to measure using nonstandard and standard units; select an ...