This site has thousands of word problems for elementary level learners. There are also a few strategies for solving word problems. The annual subscription price is very reasonable, although the payment process is a bit primitive.
This site has a library of science activities and lessons, plus links to many other websites.
These learning kits on different countries are designed to promote global citizenship.
Self-paced, online coding classes for ages 7 to 15.
This site provides group buys for homeschoolers.
This is a wonderful website from Stanford Math Education Professor Jo Boaler.
This is the organization that publishes Poetry Magazine.