2. Combine together these ingredients: Some butter Some butter Some sugar Some sugar A little salt A little salt A lot of flour A lot of flour A bunch of nuts A bunch of nuts A whole lot of oatmeal A whole lot of oatmeal A little baking powder A little baking powder

3. Next… Mix well Mix well Heat up the oven Heat up the oven Bake them for a long time. Bake them for a long time.

4. What is wrong with this recipe?

5. Think about this: When have you ever needed to know an exact quantity or size? When have you ever needed to know an exact quantity or size? Describe a time when you had to explain to someone an exact quantity or dimension. Describe a time when you had to explain to someone an exact quantity or dimension. What equipment have you used to measure things? What equipment have you used to measure things?

6. Triple Beam Balance Measures mass (how much stuff something is) Measures mass (how much stuff something is) The readings are labeled with grams, such as 15.0g. The readings are labeled with grams, such as 15.0g.

7. Rulers and Meter Sticks Measure length (how long something is) Measure length (how long something is) Label measurements with centimeters ( 5.3 cm) Label measurements with centimeters ( 5.3 cm) 10 mm=1cm 10 mm=1cm 100cm = 1 m 100cm = 1 m

8. Graduated Cylinder Measures volume (how much space something takes up) Measures volume (how much space something takes up) Measured in mL or cm Measured in mL or cm 3 (such as 9.3 mL)

9. Thermometer Measures temperature (how much heat is in something) Measures temperature (how much heat is in something) Uses units called degrees Celsius or degrees Fahrenheit. Such as 37°C or 98.6°F Uses units called degrees Celsius or degrees Fahrenheit. Such as 37°C or 98.6°F

10. Spring Scale Used to measure the strength of a force (a push or a pull) Used to measure the strength of a force (a push or a pull) The unit we use to label with is the Newton The unit we use to label with is the Newton (such as 5 N of force)

11. Scientists use a variety of tools for measuring Triple beam balances for mass Triple beam balances for mass Thermometers for temperature Thermometers for temperature Spring Scales for force Spring Scales for force Graduated Cylinders for volume Graduated Cylinders for volume Rulers and meter sticks for length Rulers and meter sticks for length

12. Using a triple beam balance Rachel Spencer shows us how! Rachel Spencer shows us how!

13. Using a triple beam balance 1. Move all riders to zero 1. Move all riders to zero 2. Use the adjusting screw to set the pointer at zero on the indicator. 2. Use the adjusting screw to set the pointer at zero on the indicator. 3. Place an object on the pan 3. Place an object on the pan

14. 4. Adjust the riders (starting with the biggest) until the pointer points at zero on the indicator. 4. Adjust the riders (starting with the biggest) until the pointer points at zero on the indicator. 5. Add the grams on the 3 beams together 5. Add the grams on the 3 beams together 6. Write the total mass on your paper 6. Write the total mass on your paper 7. Label your answer in grams. 7. Label your answer in grams.

15. Temperature

16. Temperature Tells us how much heat is in something Tells us how much heat is in something Measured with a thermometer Measured with a thermometer Thermometers show degrees Celsius or degrees Fahrenheit. (Lab thermometers show °C) Thermometers show degrees Celsius or degrees Fahrenheit. (Lab thermometers show °C)

17. Using a thermometer Let Steve and Myleishka show you how! Let Steve and Myleishka show you how! Bulb of thermometer should be in center of the liquid Bulb of thermometer should be in center of the liquid Keep it in the liquid Keep it in the liquid Don’t shake down the thermometer or use it as a stirring rod Don’t shake down the thermometer or use it as a stirring rod

18. Important Temperatures Boiling Point of Water Boiling Point of Water Normal body temperature Normal body temperature Freezing Point of Water Freezing Point of Water Room Temperature Room Temperature

19. Measuring volume of a liquid Fallon Johnson uses a graduated cylinder to measure the volume of a liquid. Fallon Johnson uses a graduated cylinder to measure the volume of a liquid. Put the graduate on a level surface Put the graduate on a level surface Read the volume from eye level Read the volume from eye level Use the bottom of the meniscus. Use the bottom of the meniscus.