Math · AreaVISUAL DISCOVERY 04 OF 1,100
Pair Two Trapezoids
Builder · about 6 minutes · a little curiosity goes a long way
For grown-ups
Today’s little discovery
A rotated copy joins the original. Their unequal parallel sides line up to form a base of top + bottom, with the same height. One trapezoid is half that parallelogram.
Have the learner name the new long base before calculating.
This is a learning model. Try the take-home activity together.Voice settings
Using Heart (en-US).
Your selected voice and opening narration get ready when the page opens with Sound on. The first visit downloads a voice model (about 92 MB), which your browser can cache. No lesson text is sent to a speech service.The sample plays once and does not change the Sound on/off setting.- Wonder
- Guess
- Try it
- Discover
- Celebrate
HERE’S A LITTLE WONDER…
Why do both parallel sides get averaged?
Two matching trapezoid tables turn together to make one long parallelogram.
No rush. Try an idea and see.