American Museum of Natural History
A Kid's Guide to Stargazing
Get kids interested in stargazing with a step-by-step guide. The guide begins with the do's and don'ts, what the defines a star, and introduces a journal. The page is linked to see stars if light pollution keeps stars away in your area.
NumberNut
Number Nut: Subtraction: Borrowing
Explains the concept of 'borrowing' in subtraction, also known as regrouping or decomposing numbers.