Arithmetic Tests And Studies in the Psychology of Arithmetic

Cover Arithmetic Tests And Studies in the Psychology of Arithmetic
Arithmetic Tests And Studies in the Psychology of Arithmetic
George S George Sylvester Counts
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1 95-7 92. 9 86. 6 84. 5 66. 5 68. 1 77-9 83-6 58. 5 67-7 50. 5 44-3 99. 2 98. 7 90. 2 98. 5 95-o 90. 2 88. 2 76. 8 86. 4 77-9 94. 0 69. 8 79-5 77-3 69. 6 99. 1 98. 6 87. 0 97-3 93-0 87-5 85-3 72. 4 83-4 77. 0 92. 6 61. 5 73-i 66. 4 60. 7 98-5 97-9 86. 3 96. 8 93-5 87. 1 88. 2 72. 8 78. 9 75-i 92. 6 66. 7 71. 2 63-4 53-o 98. 8 97-4 86. 4 96. 2 90. 8 84. 2 81. 3 71. 9 71. 9 72. 9 88. 8 51. 8 66. 3 52. 4 48. 2 99. 0 99-3 88. 1 97. 8 95-9 92. 4 89. 8 79-7 87. 8 82. 2 97-3 76. 1 80. I 86. 9 81. 1 9...8. 4 98. 8 87. 8 97-4 94-2 89. 9 89-4 80. 2 85-7 77-2 95-9 65-9 74-5 84. 1 67. 2 99. 0 98. 8 89. 1 96. 6 93 - 9-5 87. 3 71. 0 81. 8 76. 0 93-5 64-7 76. 4 77-3 63-7 98. 7 98. 8 88. 6 97-3 93-5 87. 9 86. 8 77. 0 80. 4 76. 3 94. 0 68. 3 71-3 74-5 57-4 B C D E F...
G H I T K. .
L M N O In Diagram 34 the under-age and the over-age groups are com- pared through the six grades in Sets L, M, N, and O. These graphs STUDIES IN THE PSYCHOLOGY OF ARITHMETIC Group JT DIAGRAM 34. A comparison of percentages of accuracy made in Sets L (mul- tiplication), M (addition), N (division), and (fractions) by two age groups through Grades 3-8.


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