5.6D

41–50

21. Matter Exists

22. State of Particles

23. Particle Solutions

24. Interdependence

25. Particles Matter

Force, Motion, and Energy

51–100

5.7A

51–60

26. Forces

27. Equal and Unequal

28. Movement

29. Direction

30. Which Way?

5.7B

61–70

31. Effects of Force

32. Friction Investigation

33. Investigating Force

34. Design Challenge

35. Forceful Launch

5.8A

71–80

36. Energy Transformation

37. Generating Electricity

38. Boilers

39. Boiling Water

40. Airplanes

5.8B

81–90

41. Complete Circuit Characteristics

42. Electrical Energy

43. Transforming Energy