Eureka Math Lesson One

Objective: Understand equal groups of as multiplication.

Application Problem (10 minutes)


There are 83 girls and 76 boys in the third grade. How many total students are in the third grade?

Concept Development

Problem 1: Skip-count to find the total number of objects.

(Select 10 students to come to the front.) At the signal, say how many arms you each have. Two! Skip count to solve 10 x 2 = ?

Problem 2: Understand the relationship between repeated addition, counting groups in unit form, and multiplication sentences.

You have 12 counters. Use your counters to make equal groups of two. How many counters will you put in each group? Show with your fingers.

Problem 3: Write multiplication sentences from equal groups.

Problem Set (10 min)

Practice Problems of arrays

Student Debrief (10 Min)

Review Lesson Objective: Understand equal groups of as
multiplication.

Published by Jackie Marie Beyer

I grew up on Long Island about 20 miles from NYC. When I was in 4th grade I read Sasha, My Friend by Barbara Corcoran which is a story about a little girl who moves to her dad’s Christmas tree farm in northwest Montana. From that day on I was determined to move there and when I was 21 I entered the University of Montana in Missoula. During my junior year I met my husband on a mountainside and we have been happily married for over 25 years now! I have had such an exciting life, traveling all around the United States, mostly in the Northwest corner and back and forth between Montana and NYC. When I am not in the classroom, I spend most of my time in Montana’s National Forests, collecting firewood, picking wildflowers, gathering mushrooms, searching for antlers, or just sighting a majestic mountain view! I love to hike with my friends and family and paint the things that I see and find, creating stories to share!

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