|These students found the lengths they chose formed an obtuse triangle.|
|These students formed a right triangle.|
As they worked they filled a sheet to to collect their information. Then looking at the sides that did not form triangles they wrote why they thought they didn't form triangles. There were some interesting observations like: "It just doesn't fit.", "It won't close.", and "they aren't long enough." It was a great visual for the students. On day two when we discussed this we actually lined the two shorter sides next to the longer side to show they were not greater than the third side. We also looked at sides that did form triangle and the two shorter sides were longer than the third side.They kids did a great job on this activity. Of course, you know they did want to start building towers. I do need to find a building towers activity because they would love it. Suggestions anyone?
Click here to get a copy of the Triangle investigation sheets. This is adapted from
Alexander Sabatino, Jr's Picking Pythagorus Lesson.
Everything went well until "that class" came in. I don't know if you have one of these but I have one this year. They are challenging in every area you can imagine, yet I keep trying to do group work with them. What's the matter with me? Well anyway, one of the students came in, let's call him "T" and he quickly grabs the Tupperware and says he will pass them out. Before I can utter a word, he has eight Tupperware stacked in his arms and yes, you guessed it, he dropped them. All the snap cubes, 100's of them are all over the floor. At least "T" was busy for awhile picking them all up. Oh the joys of middle school.
This lesson worked well and the kids enjoyed it. It gave them an great visual for the triangle inequality rule. I will definitely be doing this again next year.
Til next time,