Interactive Mathematics http://www.intmath.com/ Learn math while you play with it! en Interactive Mathematics http://www.intmath.com/images/HOME.gif http://www.intmath.com/ 24 24 IntMath Newsletter: Prime cicadas http://www.intmath.com/blog/?p=8102 http://www.intmath.com/blog/?p=8102 In this Newsletter:

1. Math resource: MathGraph32
2. Prime numbered cicadas
3. Relieving test anxiety
4. Math puzzle
5. Final thought: Watching

]]> MathGraph32 http://www.intmath.com/blog/?p=8104 http://www.intmath.com/blog/?p=8104 MathGraph32
MathGraph32 is a great free tool for exploring 2D and 3D math concepts. ]]> Prime numbered cicadas http://www.intmath.com/blog/?p=8096 http://www.intmath.com/blog/?p=8096 Magicicada

The 17-year cicada is due to emerge in north-eastern parts of USA in Spring 2013.]]> IntMath Newsletter: XplorMath, Mathics, STEM challenge http://www.intmath.com/blog/?p=8062 http://www.intmath.com/blog/?p=8062 In this Newsletter:

1. Math resource - 3D-XplorMath-J
2. Math resource - Mathics
3. National STEM Video Game Challenge - on now
4. ComputerBasedMath partners with Estonia
5. Math puzzle
6. IntMath Poll
7. Final thought: Passing civilization on

]]> IntMath Newsletter: Subitizing, Jacob, Fractals and Donald Duck http://www.intmath.com/blog/?p=7943 http://www.intmath.com/blog/?p=7943 1. Gong Xi Fa Cai
2. Counting game and Subitizing
3. Jacob's Staff
4. Creating a Google-like classroom climate
5. Math puzzles
6. Friday math movie
7. Final thought - Perfect days

]]> Jacob's Staff http://www.intmath.com/blog/?p=7755 http://www.intmath.com/blog/?p=7755 Jacob's Staff
Scientists used Jacob's Staff during the Renaissance to find heights and distances, using trigonometry. It was a forerunner to the sextant.]]> Friday math movie: Donald in Mathmagic Land http://www.intmath.com/blog/?p=7805 http://www.intmath.com/blog/?p=7805 Donald in Mathmagic Land
This is a classic late-1950s cartoon where Donald learns where math comes from.]]> Counting game and subitizing http://www.intmath.com/blog/?p=7812 http://www.intmath.com/blog/?p=7812 subitizing

Can you count faster than a chimp? Our number sense begins with our ability to count.]]>