Develop strategies for finding the perimeter and area for rectangles and triangles using geoboards and graph paper.

A common misconception is that when the dimensions of an object are doubled, the area is doubled, too. But this is not true! Use this applet to investigate how changes in the scale factor influence ...

Model addition and subtraction with buttons.Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM Resources and Professional Development Member ...

Members-Only Access Log in above or click Join Now to enjoy these exclusive benefits: Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM ...

Count ducks and recording data.Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM Resources and Professional Development Member-Only Grant ...

Investigate the patterns when a "plus sign" (a cross-shaped arrangement of five squares) is placed on the board in various locations.

Problem solve using systems of equations.Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM Resources and Professional Development ...

The buttons are meant to be used sequentially, and will appear in the order they are meant to be pressed. Do not press buttons before all movements are complete. The Reset button can be used at any ...

Encourage students to use visualization, spatial reasoning, and geometric modeling to build their own patterns or recreate one from given square arrays. Create pattern units of two to five squares and ...

Members-Only Access Log in above or click Join Now to enjoy these exclusive benefits: Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM ...

Members-Only Access Log in above or click Join Now to enjoy these exclusive benefits: Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM ...

Members-Only Access Log in above or click Join Now to enjoy these exclusive benefits: Award-Winning Journals Free Classroom-Ready Activities Member-Only Online Teaching Resources Discounts on NCTM ...