Robertson Blog

The Power of the Number Line: A Model that Scales

Number lines make explicit and build upon pre-existing spatial-numeric intuitions, support children’s growing understanding of ratio, proportion and scaling, and help students to construct and internalize a “mental number line” that continues to develop in complexity from kindergarten through university mathematics and beyond.

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Junior Daily Math Discussion

Grade 4/5 Teacher Zoe Donoahue shares the Daily Math Discussion she’s developed for junior grades. Her students use the number of days in school to explore factors, prime and composite numbers, fractions, division, multiplication, place value — and more!

Read More »

Teacher Learning Modules: Mathematics concepts for elementary teachers

Self-directed modules intended to support primary- and junior-grade teachers seeking to solidify or extend their mathematical knowledge for teaching. Concepts and procedures are based on Ontario’s elementary math curriculum. Each module concludes with an interactive problem-solving slide deck to practice relevant concepts in different contexts.

Read More »

Fraction Ball: Bringing rational numbers to the court

Fraction Ball converts a traditional basketball court, putting focus on the relationship between fractions and their equivalent decimals. “Fraction Ball can be painted pretty much anywhere or even drawn with chalk,” says University of California-Irvine Assistant Professor Dr. Andres Bustamante.

Read More »

The Power of the Number Line: A Model that Scales

Number lines make explicit and build upon pre-existing spatial-numeric intuitions, support children’s growing understanding of ratio, proportion and scaling, and help students to construct and internalize a “mental number line” that continues to develop in complexity from kindergarten through university mathematics and beyond.

Read More »

Junior Daily Math Discussion

Grade 4/5 Teacher Zoe Donoahue shares the Daily Math Discussion she’s developed for junior grades. Her students use the number of days in school to explore factors, prime and composite numbers, fractions, division, multiplication, place value — and more!

Read More »

Teacher Learning Modules: Mathematics concepts for elementary teachers

Self-directed modules intended to support primary- and junior-grade teachers seeking to solidify or extend their mathematical knowledge for teaching. Concepts and procedures are based on Ontario’s elementary math curriculum. Each module concludes with an interactive problem-solving slide deck to practice relevant concepts in different contexts.

Read More »

Fraction Ball: Bringing rational numbers to the court

Fraction Ball converts a traditional basketball court, putting focus on the relationship between fractions and their equivalent decimals. “Fraction Ball can be painted pretty much anywhere or even drawn with chalk,” says University of California-Irvine Assistant Professor Dr. Andres Bustamante.

Read More »