R

1. Rabbits

2. Railroads, Growth of (US History) 

3. Rainbows

4. Rainforests 

5. Ramadan

6. Ratio 

7. Rawls, Wilson (Red Fern Grows)

8. Ray, Delia (Ghost Girl)  

9. Real or Make-Believe 

10. Rebellion & Reform (USA)

11. Reading (English)

12. Reading Comprehension 

13. Reading Hour (Yakaberry)

14. Recipes

15. Reconstruction (Post Civil War) 

16. Rectangles 

17. Reformation 

18. Regions of the World

19. Religions 

20. Erich Remarque (author)

21. Rembrandt

22. Renaissance 

23. Reproductive Systems 

24. Reptiles

25. Research Skills

26. Resumes (Getting a Job)

27. Reuse, Reduce, Recycle 

28. Revelation (Bible Study) 

29. Revolutionary War (American) 

30. Rey, H.A. & Margret (Curious George) 

31. Rhode Island 

32. Rivers of the World 

33. Road to Revolution (American Rev)

34. Roaring Twenties (1920s, US History)  

35. Robots

36. Rock 'n Roll (by Stuart Kallen) 

37. Rocks/Geology 

38. Rockwell, Thomas (Fried Worms)  

39. Roman Numerals 

40. Romans in Britain

41. Rome, ancient

42. Root Words 

43. Rounding & Place Values (math) 

44. Rousseau, Henri 

45. Rubens, Peter Paul  

46. Runners & Running (Sports) 

47. Russia and her Neighbors 

48. Ryan, Pam Munoz 

49. Rylant, Cynthia