Scholastic
Study Jams! Greatest Common Factor
When one method isn't enough to teach GCF, try two! This interactive webpage introduces factors and the prime factor tree to find the greatest common factor of two numbers. After the lesson, have learners click to try the two examples...
Scholastic
Study Jams! Tree Diagrams
With so many toppings to chose from, make the ice cream truck combinations a fun math problem that teaches your learners about outcomes. The video introduces a tree diagram that allows your mathematicians to see how to create...
Math Learning Center
Grade 5 Supplement Set A2 – Number and Operations: Primes, Composites and Common Factors
Incorporate riddles into your math lesson by having students make tree factors and determine if the number is a prime or composite. They will also use other clues to find the answer to the riddle while sharpening their multiplication...
Curated OER
Using a Factor Tree to Find the GCF
Learners use the example of a factor tree to find the greatest common factor of three numbers in four problems.
Curated OER
Factor Trees
In this factor trees worksheet, students make factor trees for 2 through 4 digit numbers. Students complete 20 factor trees for these numbers.
EngageNY
Least Common Multiple and Greatest Common Factor
Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...
Illustrative Mathematics
How Many Leaves on a Tree?
This is great go-to activity for those spring or fall days when the weather beckons your geometry class outside. Learners start with a small tree, devising strategies to accurately estimate the leaf count. They must then tackle the...
Curated OER
Using Factor Trees
In this math learning exercise, students read about how to create a factor tree. Students use factor trees to determine the prime factors of 16 numbers.
Curated OER
Learning About Trees
After looking at pictures of trees, discussing tree growth, and identifying the parts of a tree, lead your class on a nature walk and have them collect samples and record their observations. They then work in pairs to polish the...
Curated OER
Finding Factors
In this finding factors worksheet, students practice finding all the factors of 24 in twenty word equations and then find the prime factorization in ten equations.
Curated OER
Prime Factorization: Finding Factors in the Fifth Grade
The lesson starts out with a brain drain, which is a great way to get students to activate prior knowledge and build lasting connections. They tell everything they know about prime factorization, use their knowledge to...
US Environmental Protection Agency
Tree Rings: Living Records of Climate
Open with a discussion on weather and climate and then explain how tree rings can provide scientists with information about the earth's past climate. Pupils analyze graphics of simulated tree rings from various US locations for the...
Chicago Botanic Garden
What Can Tree Rings Tell Us About Climate?
Tree rings are slightly thicker on the south side of the tree because it receives more sunlight. Part two in a series of five lessons helps learners analyze tree rings to determine the environmental conditions that caused size...
CK-12 Foundation
Greatest Common Factor Using Factor Trees
Beginning with a description that sets the stage, learners are asked to break down the numbers 42 and 63 to find the greatest common denominator using factor trees. As they work through the factoring process, young mathematicians are...
PBS
Human Tree: Ratios
Create a personal tree. By visiting an exhibit at the National Museum of Mathematics, the resource introduces the idea of fractals. The exhibit takes an image of the person and creates a tree by repeating scaled images on the shoulders...
Curated OER
Factors, Primes, Squares
Teach the joys of factoring and introduce prime and square numbers. Upper elementary learners are introduced to these concepts through complete definitions, examples, and practice problems. A variety of strategies, such as factor trees...
Curated OER
LCM: Factor Trees, Numbers Up to 10
Fourth and fifth graders complete factor trees to find the lowest common multiple out of the two numbers given up to the number 10. Students complete four problems.
Curated OER
Factor Tree Worksheet
In this prime factorization worksheet, students use the factor tree method to solve four factorization problems. The numbers go up to the hundreds place.
Curated OER
Prime Factorize
In this factorization worksheet, students prime factorize six numbers by using the factor tree method. The numbers given go up to the number 24.
Curated OER
Factors and Factorization
For this factors worksheet, learners list all factors of given numbers. All numbers are positive and contain two to three digits. This four-page worksheet contains 28 problems. Answers are provided.
Scholastic
Study Jams! Prime Factorization
Deepen the number sense of young mathematicians by exploring the process of prime factorization. Follow along with this step-by-step presentation that explains how factor trees are used to break a composite number down into its prime...
Curated OER
Factor Pairs
This presentation covers a lot of ground. Square numbers, metal math computations, commutative property, ordering positive and negative integers, factoring, and real world problem solving are all covered. Use over the course of several...
Curated OER
Factor Trees: 2 digit numbers
in this factors worksheet, students factorize 2 digit numbers by using the factor tree method. Students factorize 4, 2 digit numbers total.
National Wildlife Federation
Branching Out – Exploring Dendrochronology
Tree rings from North America give a continuous history of El Nino intensity over the last 1,100 years. Scholars learn how scientists use tree rings to create timelines demonstrating variations in weather patterns. The cumulative...
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