by MathPickle | Sep 19, 2015 |
Zome Zome is a manipulative that is excellent for the upper grades – however it takes time to put away and is fragile. Nevertheless, there is no manipulative so versatile on the market, so it should be considered. I am now equally in favour (especially for...
by MathPickle | Sep 19, 2015 |
Taxi Cab Squares (inspired by the Inscribed square problem of Otto Toeplitz, 1911) Give your students practice with Cartesian coordinates as they explore a new variant of a famous, unsolved problem of Otto Toeplitz (1911). This problem has a very wide spectrum of...
by MathPickle | Sep 15, 2015 |
Complete the Quadrilateral (Don Steward, 2013) Try finding the largest and smallest rhombus, rectangle, trapezoids etc. so their vertices include a special point and the other vertices lie on the lattice points of a grid. The first half of the video is quite easy,...
by MathPickle | Sep 15, 2015 |
Circus Tent Puzzle The best tents are the ones that have the smallest perimeter. Both of these tents have a perimeter of 7. That's the best you can do for $17. Each triangle is worth $3. Each square is worth $4. Given a tent price find the smallest perimeter. Let's...
by MathPickle | Sep 15, 2015 |
Symmetry Search (MathPickle, 2011) Give your students practice identifying mirror and rotational symmetry. I’m 95% happy with this puzzle… the mild negative issues are: 1) Some students see the 2D shapes as 3D shapes and this confuses their perception of...
