Alexander, nine, and I discussed parallax. I thought that parallax was in a stealth fighter jet, but no. Parallax has to do with our perception of a distant object, such as a jet. Try this. Put your finger in front of you and look at an object. I chose a picture on the wall. I closed my left eye and then my right eye, and the finger moved to the right when I closed my right eye. We said we would teach each other about parallax.
using the sexagesimal system, not the decimal system
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