Math
- 141
- Math Games - Hooda Math
- Math games site with online games categories including physics, escape, shop, geometry, logic, building, racing, puzzle, grow, number, block removal, and block roll games.
- 142
- Math Games - Math Playground
- Action packed math site for elementary and middle school students featuring math games, math word problems, math worksheets, logic puzzles, and math videos.
- 143
- Math Games - PrimaryGames
- Play free online math games for kids with our huge collection of learning games. Play educational math games like Skater Math, Pizza Party, What Time is It? and Fishy Count.
- 144
- Math Games Online Lesson Creator
- A huge assorted list of online math games. Teachers can select games and group them into a custom online lesson for their students.
- 145
- Math Nook
- Mathnook offers the best cool math games for kids. Children learn math while playing fun online games. Free math games target a variety of math skills.
- 148
- Free math puzzles for ESL and native English students
- We are a group of ESL math teachers in Asia and have collected some of our best primary math puzzles and games and put them online.
- 149
- Torsten Sillke
- A professor presents his extensive collection of puzzles which use counting, arithmetic, algebra and whole numbers.
- 150
- Archimedes
- Article covering the life and works of the mathematician. Includes pictures of his inventions.
- 152
- Rene Descartes (1596 - 1650)
- Excerpt from "A Short Account of the History of Mathematics" by W. W. Rouse Ball.
- 154
- Wikipedia - René Descartes
- Encyclopedia article about the influential French philosopher, mathematician, scientist, and writer.
- 158
- The Martyrdom of Hypatia
- Transcript of speech first in 1915 provides a detailed account of the events leading up to her death.