📁 学校时间数学算术
This category lists pages and sites that deal with the basic mathematical operations of addition, subtraction, multiplication, and division. It includes games, tutorials, online drills, and printable worksheets.
条目 (20+)
You Quote It, You Note It!
https://library.acadiau.ca/research/tutorials/you-quote-it-you-note-it.html
A California Alphabet and Coloring Book
https://www.fsa.usda.gov/Internet/FSA_File/california_colorbook.pdf
Dry Bones (or Skeleton Bones)
https://kids.niehs.nih.gov/games/songs/childrens/dry-bones/