Math Animations (Grades 1 vs 解小学应用题 培优数学专题 应用题

Great way to "see" how math works! --by Greg Garner Awesomely Effective!!! An absolutely amazing and brilliant way to visually demonstrate basic math principles! Thank you! -- by iPad Dad3 Math Animations : mathematics animations. The animations provide short, sharp, visual explanations of mathematical concepts. Who is it for? It is for everyone interested in mathematics. It is principally designed for upper primary and lower secondary teachers to use in the classroom, but students interested in deepening their understanding of core concepts will also find the site useful. Animations: 1. Addition 2. Addition Table 3. Subtraction 4. Subtraction Table 5. Multiplication 6. Multiplication Table 7. Division 8. Division Table 9. 123 = ? 10. 12 + 45 11. 123 + 456 12. 45 - 12 13. 456 - 123 14. 12 × 3 15. 12 × 45 16. 123 × 56 17. 456 ÷ 3 18. 456 ÷ 12 19. a + b = b + a 20. a × b = b × a 21. (a+b) × c = a×c + b×c 22. Perimeter of a Square 23. Perimeter of a Rectangle 24. What is Area? 25. Area of a Square 26. Area of a Rectangle 27. Area of a Parallelogram 28. Area of a Triangle 29. Area of a Trapezoid 30. Angle sum of a Triangle 31. Definition of a circle 32. Radius × 2 = Diameter 33. What is π ? 34. Perimeter of a circle 35. Area of a circle 36. What is Fraction? 37. Adding Fractions 38. Subtracting Fractions 39. Multiplying Fractions 40. Dividing Fractions 41. Fraction × n 42. Fraction ÷ n 43. 1.23 + 0.56 44. 1.23 - 0.56 45. 1.2 × 0.5 46. 1.2 × 4.5 47. 1.23 × 0.56 48. 4.56 ÷ 2 49. 4.56 ÷ 1.2 50. X + 3 = 12 51. 2X = 8 52. 2X + 3 = 11

本应用包括如何运用数形结合的思想，解小学应用题，其中最本质的要求是数形一致。结合题目，分别讨论了：相遇问题，折返后的距离，单行程问题，2个追及问题，运用柳卡图解决2个多次相遇问题和流水行船相遇问题，解决分数应用题的关键是找准单位1，结合分数应用题和百分数应用题巩固单位1的使用方法。结合图形，还解决了2类鸡兔同笼，和差问题和倍数问题。 本应用还包括小学数学知识体系的树状图，直观的数数，比较多少，乘法口诀表，几何图形的旋转三要素，加减乘除练习，24时计时法和12时的相互转换，单位换算，用线段图理解加法和减法的意义；分数乘分数的形象解释，数轴上不同的数的种类，以及理清分数，小数和百分数之间的相互转换。