Magnetic Proof Pieces

One simple thing I've done this year in teaching congruent triangle proofs is I printed and laminated some of the most common reasons found and attached magnets to them.

I also drew up three common "facts" that we look for when the information in the given is not enough.

This has been great for students to refer to while they are writing proofs. On one section I was able to tell them that every reason came from one of those pieces and that helped students complete proofs instead of leaving some parts blank.

 I still don't know why they want to really throw out 'definition of midpoint' when the given says 'bisect' but you can't fix everything!


  1. Totally stealing this idea if I ever teach geometry!

  2. In 1962, Kalyanji Bhagat started the Satta Matka. Rattan Khatri introduced the New Worli matka in 1964, with slight modifications to the rules of the game. Kalyanji Bhagat's matka ran for all days of the week, whereas Rattan Khatri’s matka ran only five days a week, from Monday to Friday.
    During the flourishing of textile mills in Mumbai, many mill workers played satta matka, resulting in bookies opening their shops in and around the mill areas, predominantly located in Central Mumbai. Central Mumbai became the hub of the satta matka business in Mumbai.