An Etoys model of a spinning Earth orbiting the sun while a spinning moon orbits the Earth. Use it model to discuss lunar months, solar years and models. How is it different from the real Moon and Earth?

A game: Players take turns adding ready made pie-shaped circle fractions to a given circle. The last player to put a tile before overlapping occurs, wins.

Geometric Loci: Relations between points A and B and the rest of the plane defined by the distances of points to A and B. Scanning gives a picture of the group of points in the relation. Examples: Middsection perpendicullar; Hiperbolas; Ellipses.

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