SamizdatMath

This is a second set of 10 3-D spatial problem solving puzzles that use 2 - 3 of the seven Soma pieces. There are three different kinds of puzzles: Basic Puzzles: These are puzzles which show the solution to the puzzle in three different colors. Students have to locate the proper pieces and assemble them as shown in the diagram. Intermediate Puzzles: These are puzzles where the solver is told which 2 - 3 pieces to use, but not how they fit together. Students locate the individual pieces and th

Note: There is now a video tutorial that goes with this activity: Division With Remainders: Just Do It (RIGHT!) Your students are "learning" about division, and if you're using a really, really cruddy curriculum, then they probably all sound like this: "I have 24 blah blah blahs which I'm packing into cases of (choose some divisor of 24.) How many cases will I be able to make. This, my friends, is a lackadaisical and churlish approach to teaching students about solving problems with division.

This is one of an occasional series of mondo-tough problems that use small numbers (or no numbers at all!) Here’s how it works: we all teach our students how to take a group of numbers and calculate the range, mean, median and mode. Seems pretty simple, and our students tired of it damned quickly. Can you blame them? It’s just “do what the teacher told me to do, and then write the answer here...” kind of busywork. But what if we were to switch the tables on our students: let’s give them t

First of all, let’s get one thing out of the way: Archimedes never used the Greek letter “pi” when he used it to calculate the area and circumference of a circle. No, never; so just by reading this blurb you've learned something new! The point of this activity is threefold: the first is to show that as you double the diameter of a circle, the area of that circle would quadruple. That’s a very important concept, because many of your students have only experienced relationships where if

These activities are centered around the idea of measuring and constructing pitched roofs. Depending on a building's cost, function and location, a roof can either have a very steep pitch (which would mean a very acute angle, like you would find on ski houses in the mountains) or an obtuse angle (like a house in the tropics where it rains a lot and the water has to run off slowly to prevent flooding.) These activities are designed for students to work on individually or in pairs: the first part