Unit vocabulary words: renewable resource, nonrenewable resource, natural resource, phosphate, oil, limestone, silicon, wind energy, solar energy, environment
In math, we also started a new unit on multiplication. On Monday and Tuesday we explored multiplicative comparisons. Multiplicative comparisons is just a fancy way of saying multiplying by comparing groups. This unit also introduces some algebraic computations, so instead of using a question mark symbol for the unknown number, letters will be used instead. In our math journal, I guided students through several problems using the following method:
Emily has 9 pennies. Leah has four times as many pennies as Emily. How many pennies does Leah have?
Leah 9 9 9 9
N= 4 x 9
On Thursday and Friday students learned how to use the zero strategy to solve multiplication problems fast and efficiently.