1. Challenge 1

2. Can you figure out how to make the balance even? If 2 diamonds = 1 circle and 2 squares = 3 circles, what do you need to balance out 1 square?

3. Can you figure out how to make the balance even? If 2 diamonds = 1 circle and 2 squares = 3 circles, what do you need to balance out 1 square?

4. Can you figure out how to make the balance even? If 2 diamonds = 1 circle and 2 squares = 3 circles, what do you need to balance out 1 square?

5. Can you figure out how to make the balance even? If 2 diamonds = 1 circle and 2 squares = 3 circles, what do you need to balance out 1 square? Equations to solve problem: If 2 d = 1 c and 2 s = 3 c then 2 s = 3(2 d) 2 s = 6 d, or 1 s = 3 d 1s = (d + d) + d, therefore 1s = (1c) + d

6. Challenge 2 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

7. Using a total of 7 brass weights, can you balance this balance? Some weights can be used more than once

8. Using a total of 7 brass weights, can you balance this balance?

9. Challenge 3 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

10. Can you balance the balance below by using the fewest number of weights? Some weights can be used more than once

11. Can you balance the balance below by using the fewest number of weights? Some weights can be used more than once

12. Challenge 4 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

13. What is the total mass? Where should the riders be?

14. What is the total mass? Where should the riders be? 172 g http://www.ohaus.com/products/education/weblab/TBBread.html

15. Challenge 5 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

16. Complete the following conversions for grams and kilograms: 5,250 g = ____ kg 1,998 g = ____ kg 610 g = ____ kg 40 g = _____ kg 8.1 kg = ______ g 2.92 kg = ______ g 0.73 kg = ______ g 0.01 kg = ______ g

17. Complete the following conversions for grams and kilograms: 5,250 g = 5.25 kg 1,998 g = 1.998 kg 610 g = 0.61 kg 40 g = 0.04 kg 8.1 kg = 8,100 g 2.92 kg = 2,920 g 0.73 kg = 730 g 0.01 kg = 10 g

18. Challenge 6 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

19. Unscramble the following words related to mass a.amrsg b.msliaokrg c.elncaba d.rridse e.maeb f.nap g.rtpeion

20. Unscramble the following words related to mass a.amrsg b.msliaokrg c.elncaba d.rridse e.maeb f.nap g.rtpeion a.Grams b.Kilograms c.Balance d.Riders e.Beam f.Pan g.Pointer

21. Challenge 7 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

22. Complete the following conversions for grams and milligrams: 7,165 mg = ____ g 3,110 mg = ____ g 430 mg = ____ g 88 mg = _____ g 9.56 g = _____ mg 4.2 g = _____ mg 0.18 g = _____ mg 0.007 g = ____ mg

23. Complete the following conversions for grams and milligrams: 7,165 mg = 7.165 g 3,110 mg = 3.11 g 430 mg = 0.43 g 88 mg = 0.088 g 9.56 g = 9,560 mg 4.2 g = 4,200 mg 0.18 g = 180 mg 0.007 g = 7 mg ÷ 1,000x 1,000