Students use gram cubes to estimate the mass of small classroom objects. Then students us a balance to measure the mass of the objects. Finally, students compare their estimates with the actual masses of the objects and determine the accuracy of their estimates. Students will complete the Process Skills blackline master on Lab Manual pages 95-96 as they do the activity. Students observe and measure their shadow at two different times a day.
Students also explore making shadows using a flashlight.
Based on these experiences, students write an operational definition of a shadow. Students will complete the Process skills blackline master on Lab Manual pages 101-102 as they do the activity. Students collect data on the amount per serving of sodium, potassium, protein, and sugars in three different brands of cereals. Students graph the data as bar graphs and draw inferences from their data. Students will complete the Process skills blackline master on Lab Manual pages 107-108 as they do the activity.