Students learn about and use a right triangle to determine the width of a “pretend” river. Working in teams, they estimate of the width of the river, measure it and compare their results with classmates.

# Tag Archives: measurement & geometry

#### Ratios

This set of instructional materials and problems helps students understand ratios and proportions, starting with a simple review and progressing into the more advanced territory of similar triangles

#### A Geometric Proof of the Pythagorean Theorem

Students will see an animated presentation of the proof of the Pythagorean Theorem. This animated PowerPoint presentation uses shearing and the invariance of the area of triangles with congruent bases and heights to show a step-by-step geometric proof of the Read more

#### A Geometric Proof of the Pythagorean Theorem

Students will see an animated presentation of the proof of the Pythagorean Theorem. This animated PowerPoint presentation uses shearing and the invariance of the area of triangles with congruent bases and heights to show a step-by-step geometric proof of the Read more

#### Trig River

Students learn about and use a right triangle to determine the width of a “pretend” river. Working in teams, they estimate of the width of the river, measure it and compare their results with classmates.

#### Ratios

This set of instructional materials and problems helps students understand ratios and proportions, starting with a simple review and progressing into the more advanced territory of similar triangles