By Bill Lombard on 16 May, 2009
Isosceles Triangles can make a square, as we all know, but here’s a way to do it with seven different size triangles. Measurement, the Pythagorean Theorem, and color make this a nice project for any class, and particularly for a geometry class. The video gives complete directions for the classroom. Pause it at any time [...]
Posted in Mr. L's Videos | Tagged geometry, math video, powerpoint slides, pythagorean theorem, spatial visualization, visual modeling |
By Bill Lombard on 29 March, 2009
Friday Afternoon Lifesavers are exactly what they sound like: at the end of the week when you and your students are running out of gas, these activities come to the rescue. They are mathematical, engaging, fun, and give the teacher a much-needed break. Here’s a project that’s good for both algebra and geometry subjects. It [...]
Posted in Math Activity, Mr. L's Videos | Tagged friday afternoon lifesavers, pythagorean theorem, screencast |
By Bill Lombard on 4 February, 2009
Shown in the graphic above is the solution to the Pythagorean Theorem Cut-Up problem posed last week as a Friday Afternoon Lifesaver. This puzzle gives teachers a chance to talk about the theorem and its applications. After printing the puzzle, you can talk about how the five pieces must fit so that one edge of [...]
Posted in Puzzle | Tagged friday afternoon, intriguing puzzles, problem solving skills, Puzzle, pythagorean theorem, research, spatial reasoning |
By Bill Lombard on 29 January, 2009
Friday Afternoon Lifesavers are exactly what they sound like: at the end of the week when you and your students are running out of gas, these activities come to the rescue. They are mathematical, engaging, fun, and give the teacher a much-needed break. Here’s a puzzle that works anytime, but works especially well if your [...]
Posted in Puzzle | Tagged Friday, lifesavers, Puzzle, pythagorean theorem, visual modeling |
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