1

A New Look at an Old Weight Problem

Year:
1980
Language:
english
File:
PDF, 546 KB
english, 1980
2

A rationale for duplation-mediation multiplying

Year:
1964
Language:
english
File:
PDF, 443 KB
english, 1964
3

Why the Three Digit Period in our Number System?

Year:
1964
Language:
english
File:
PDF, 34 KB
english, 1964
4

What has eighteen legs and catches flies?

Year:
1963
Language:
english
File:
PDF, 186 KB
english, 1963
6

Adapting magic squares to classroom use

Year:
1963
Language:
english
File:
PDF, 385 KB
english, 1963
7

Using a Calculator to Find the “Greatest Common Factor”

Year:
1981
Language:
english
File:
PDF, 119 KB
english, 1981
8

Finding the greatest common factor with the number line

Year:
1965
Language:
english
File:
PDF, 451 KB
english, 1965
9

Humpty-Dumpty's lesson in arithmetic

Year:
1968
Language:
english
File:
PDF, 325 KB
english, 1968