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University of Texas
Inside Mathematics: Pam's Shopping Trip [Pdf]
This task challenges a student to demonstrate understanding of equal groups of objects to gain a foundation for multiplication.
Illustrative Mathematics
Illustrative Mathematics: Counting Dots in Arrays
This task aims to show students that there is often more than one way to represent a quantity. This lesson also lays a foundation for students to understand the commutative property of multiplication.
Illustrative Mathematics
Illustrative Mathematics: 6.ns Gifts From Grandma, Variation 3
This task presents three problems about money spent on grandchildren at a fair. The first problem involves decimal multiplication and the other two require decimal division. The lesson includes two additional lesson attachments that...
Illustrative Mathematics
Illustrative Mathematics: Connor and Makayla Discuss Multiplication
The purpose of this task is to have students think about the meaning of multiplying a number by a fraction, and use this burgeoning understanding of fraction multiplication to make sense of the commutative property of multiplication in...
Illustrative Mathematics
Illustrative Mathematics: 5.nbt Elmer's Multiplication Error
Fifth graders are presented with the calculations for a multiplication problem and are asked to explain why the answer is incorrect. They must use estimation, identify the error, show the correct arithmetic, and find the answer another...
Illustrative Mathematics
Illustrative Mathematics: 7.ns Equivalent Fractions and Non Repeating Decimals
For this lesson, 7th graders determne how to find the repeating decimal using multiplication.
Illustrative Mathematics
Illustrative Mathematics: Counting Dots in Arrays
This activity addresses CCSS 2.OA.C.4 where students count dots in an array using repeated addition. This skill lays the foundation for an understanding of multiplication.
Illustrative Mathematics
Illustrative Mathematics: N cn.a and N cn.a.1: Complex Number Patterns
This task serves as a possible first student exploration after an initial introduction to the form and arithmetic of complex multiplication. Students need to understand that every complex number can be expressed in the form a+bi, and...
Illustrative Mathematics
Illustrative Mathematics: Running to School
This is the easiest problem in a series of three tasks involving fraction multiplication that can be solved with pictures or number lines. Aligns with 5.NF.B.6.
Illustrative Mathematics
Illustrative Mathematics: 7.ee Shrinking
Seventh graders determine the decrease in height over a period of time with this real life lesson.
Illustrative Mathematics
Illustrative Mathematics: 6.ns Movie Tickets
In this task, 6th graders are asked to compare the buying power of $20 in 1987 and 2012 with respect to the cost of movie tickets. Aligns with 6.NS.B.3.
University of St. Andrews (UK)
University of St. Andrews: Nicomachus of Gerasa
Many people have used a multiplication table, but most are oblivious that Nicomachus made the first multiplication table in Greek text.
University of St. Andrews (UK)
University of St. Andrews: Rafael Bombelli
Bombelli's contributions to mathematics were mainly in algebra. He was the first to figure the multiplication of negative integers.
Better Lesson
Better Lesson: Counting Clams a Tidal Flat Adventure
Mathematics has an important role in the real world outside of school. In this lesson, students will learn how scientists use multiplication to estimate animal populations. Included in the lesson are a detailed plan, background knowledge...
Better Lesson
Better Lesson: Associative Property
Children need to understand why the mathematical properties work and how they are applied. In this lesson, we explore modeling and "proving" the associative property.