sept 27

• Continue with the areas of the lattice polygons: introducing half-integer areas. Are integers and half-integers all what we can encounter?
• We'll do a few more tree-climbing caterpillars...
• Proportions:
• Pete gave $2, Anne gave $3; they got 15 candies. How they should split them?
• $2, $3, $4; 18 marbles
• $1 and $2; 1 pizza; how to split?
• Train homework
• Frog exchanging positions; 3+3. What about 4+4?
• Cut and fold...
  
  

Experiments

• we'll try to align the shadows of two pencils with given points on the table.
• drop the card to a landing plot: how? 
• we'll continue tracing the shadows of the sun (trying to get analemma)