Wednesday, March 26, 2014
Where the thinking comes in is when I ask them if we've found all possible combinations. It doesn't take long for them to figure out they need some organization for their combination. Enter the tree diagram! We begin listing out our combinations using a tree diagram, then check to make sure we get all possible combinations. We usually only have to do this process two or three times before the kids see the relationship between the tree diagrams and multiplication. When you give kids tedious work, they naturally find the shortcuts on their own! :)
I do point out it's important they understand the process of the tree diagram to see why the multiplication strategy works! It's SO important they understand the "why" of math!!!
Tuesday, March 25, 2014
Today we worked on probability. Probability is the measure of how likely it is something is going to happen. Up till now, most the kids have used words such as these for probability: certain, impossible, more likely, less likely, etc.We take it a step farther so that we may be more precise, and find the probability in fraction form.
Friday, March 14, 2014
Tuesday, March 4, 2014
4th graders should already have a good grasp on the definition of congruence - same size, same shape. After a brief review of what congruence it, we take it a step farther and decide what transformation has taken place between two shapes that are congruent.