Project: https://scratch.mit.edu/projects/127105656/
Ideas:
- Grade 9: Provide the rest of the script for Giga to say so that the sine function’s relation to the unit circle is explained.
- Grade 10 – 12: Students at this level could write this program from scratch, and/or write one that explains other trigonometric functions. **
** This relationship can be coded and animated without using any built-in trigonometric functions in Scratch. The unit circle, triangles, and sine wave are built from simple code blocks that control the movements of coloured points, and related line segments, in specific ways that can be measured and plotted.
- Understanding the sine wave:
https://betterexplained.com/articles/intuitive-understanding-of-sine-wave/ - Interactive unit circle: http://www.mathsisfun.com/algebra/trig-interactive-unit-circle.html
Example Curriculum: Ontario Mathematics Grade 10, 11, 12
MPM2D (p. 46)
Scratch Mathland 