For K-12 mathematics:
Contains links to math sites for problem-solving tasks
Offers a variety of mathematical tasks broken down by both grade level and complexity. Excellent tasks!
Many focused on younger learners ages 5-11
For learning how to code online (free courses):
Online courses – college/professional level; some free
Add descriptive prose.
Check the links.
Get the python link.
Break this page up into a number of pages with a menu structure.