Offer reasons for their findings and consider reasons suggested by others. Add, subtract, multiply, and divide whole numbers mentally, on paper, and with a calculator. Judge whether measurements and computations of quantities, such as length, area, volume, weight, or time, are reasonable in a familiar context by comparing them to typical values. State the purpose of each step in a calculation.
Students conduct experiments on cereal to see which ones contain the most sugar.
As students test a variety of cereals, they collect data from each, recording their data on individual Sugar Test charts. At the conclusion of the test, students will transfer their data to a large Sugar Test class chart. The cereals are then ranked from most sugar to least. As the class discusses the results, individual students will give the results of their tests, and compare them with the class findings. Keep a notebook that describes observations made, carefully distinguishes actual observations from ideas and speculations about what was observed, and is understandable weeks or months later.