:45 Marti identifies pieces in the classic Kaleidoscope block and shows those shapes on the multiple-size Kaleido-Ruler.
2:00 She explains why it is important that the ruler includes the corner triangle measurements.
2:56 She introduces the companion Kaleidoscope ABCs book and then points out that the positive/negative arrangement of blocks is what creates the illusion of both dark and light circles.
Thank you for watching. Go to Cutting Half-Kaleido-Angles video.