1

Thought Processes in Grade Six Problems

Year:
1958
Language:
english
File:
PDF, 1.23 MB
english, 1958
2

The new mathematics

Year:
1964
Language:
english
File:
PDF, 777 KB
english, 1964
3

In answer to your questions-Why do children have difficulty with verbal problems?

Year:
1965
Language:
english
File:
PDF, 435 KB
english, 1965
4

Estimates of quantity by elementary teachers and college juniors

Year:
1963
Language:
english
File:
PDF, 656 KB
english, 1963
5

Ten questions

Year:
1966
Language:
english
File:
PDF, 637 KB
english, 1966