Click a square in the bottom half of the grid to match with the math
problem shown in the first square you clicked.
Click the Games tab and choose a new type of matching game
from the list in the top frame.
Other memorization ideas
Find patterns and remember them.
Look for words you've never read before.
Learn how to spell and pronounce them.
Learn what they mean and how to use them.
Measure
Measure Activity
A tool for exploring the physical world.
Display a visual image of a waveform for sound heard by the XO
microphone.
Measure DC and AC voltages and observing them on a
oscilloscope-like interface.
Watch waveforms in frequency domain (like a spectrum analyzer).
