Interactive Trigonometric Ratios

# Category Archives: Trigonometry

# 7 Days of Maths http://drawingonmath.blogspot.co.uk #4

Within this nice post about different sites and technology to use in the classroom and for workflow is this cool idea:

Students submit their right angled triangles and they’re arranged onto a scaled version of the unit circle (see: all circles ever). Great for discussion and visual prompts.

# 7 Days of Maths http://seekecho.blogspot.fr #4

Pythagorean Proof using tiling of two squares.

# 7 Days of Maths http://seekecho.blogspot.fr #1

This week I’ll be featuring great stuff posted on seekecho by Simon Gregg A great post on scaling and the Pythagorean Theorem.

Interesting stuff, and very useful if you want to teach Pythagoras with a bit of a story behind ways to deduce it (you should!)

# SOHCAHTOA Practice (TLP)

Blog post of resources from Resourceaholic

Above and Below: Don Steward Resources

Explanations of what Sine, Cosine and Tan actually are

# Math Hack

# Sine and Cosine Surds

Very useful webpage of surd values of a large number of Sine / Cosine angle values. More than the usual five or so.