• Count It Out (The Path to Math) (1976)
• Discovering Numerals (Revised) (1980)
• Doing and Undoing in Mathematics: Inverses (1965)
• The Magic of a Counter (1969)
• Modern Mathematics: Number Sentences (1966)
• Modern Mathematics: Sets (1966)
• More and Less (1966)
• Numbers in Our Lives (1970)
• Polar Coordinates (1970)
• Predicting Through Sampling (1969)
• The Probabilities of Zero and One (1969)
• Probability: An Introduction (1969)
• Tic Toc Time Clock (1976)
• Modumath: Arithmetic (1973)
• For All Practical Purpose: Introduction to Contemporary Mathematics (1988)
• The Weird Number (1971)
• Noah's Ark: Multiplying With Fractions (1971)
• Prime Time (1971)
• Dinosaur's Dilemma: Meaning of the Variable (1971)
• Probableman (1971)
• The Case of the Missing Chickcows: Adding Positive and Negative Integers (1972)
• Zero: Something for Nothing (1971)
• Lost in the Mish-Mosh (1972)
• Place to Place (1972)
• Curves (1969)

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