1. Measurement and Geometry 36 1 g 1 kg kilogram hectogram decagram gram ÷ 10 ÷ 10 ÷ 10 x 10 x 10 x 10

2. 1 kg Measurement and Geometry 36 1 g 1 kg lighter than 1 kilogram

3. 1 kg Measurement and Geometry 36 1 g 1 kg about 1 kilogram

4. 1 g Measurement and Geometry 36 1 g 1 kg heavier than 1 gram

5. GUIDED INVESTIGATION What object could we measure the mass of? Which unit of measurement could we use – the kilogram or the gram? How could we use the equal arm balance to measure the mass of the object using our unit of measurement? Is the object lighter than, heavier than or about equal to our unit of measurement? How could we record this? INDEPENDENT INVESTIGATION The object I selected is... The unit of measurement I selected is a gram … kilogram I estimate the object will be heavier… lighter … the same mass as … the gram … kilogram I measured the mass of the object using the unit of measurement and an equal arm balance by … The mass of the object is lighter than or heavier than or about the same mass as … I recorded the equal arm balance, the object and the weight, and whether one is heavier, lighter or about the same mass Measurement and Geometry 36 What is mass? What is an equal arm balance? How could we use an equal arm balance to measure the mass of objects using a kilogram weights? How could we use an equal arm balance to measure the mass of objects using a gram weights?