Embedded Files
A first look at primes for 4th and 5th graders
NOTE: This site is under construction. I am revising and editing materials week by week and add them when I can. To see an overview of what is covered in this course, click on the Edpuzzle video at the bottom of the page.
Click on the images below to see the materials and handouts for each session.
Click here to see the Common Core standards this course is based on.
Session 1: What is a Prime Number?
Session 1: What is a Prime Number?
In which we discuss what makes prime numbers special.
Session 2: Introducing the Prime Blocks
Session 2: Introducing the Prime Blocks
In which we introduce the prime blocks and build composite numbers. We look at the Commutative and Associative properties and why they are important when working with prime blocks.
Session 3: Factor Trees
Session 3: Factor Trees
In which we introduce the tool of a factor tree to discover how any composite number can be broken down into primes.
Session 4: Mental Multiplication!
Session 4: Mental Multiplication!
In which we explore some fun mental math tricks you can do with the prime blocks, and reinforce the idea that multiplication is sticking blocks together.
Session 5: Division
Session 5: Division
In which we explore division with the blocks and reinforce the idea that division is breaking the blocks apart.
Session 6: Factors Pairs and Factor Rainbows
Session 6: Factors Pairs and Factor Rainbows
In which we learn that factors come in pairs and use Factor Rainbows to find all the factors of a number.
Session 7: Divisibility Rules and Factor Finder Flowcharts
Session 7: Divisibility Rules and Factor Finder Flowcharts
In which we learn about about divisibility rules and play around with flowcharts for divisibility.
Session 8: Factor Ladders
Session 8: Factor Ladders
In which we learn another tool for finding prime factors that makes use of divisibility rules - the factor ladder.
Session 9: Fractions and Primes (originally part of session 8)
Session 9: Fractions and Primes (originally part of session 8)
In which we dip our toes into ways we can apply the prime blocks to simplifying fractions.
Session 10: More Fractions and Primes (under development)
Session 10: More Fractions and Primes (under development)
An exploration of GCF and LCM (under development)
Bonus Topic: Exponential Notation
Bonus Topic: Exponential Notation
Because this topic came up in the Beast Academy workbook, here is exploring Exponential Notation with the prime blocks.
Bonus Topic: What does "1" look like with the Prime Blocks?
Bonus Topic: What does "1" look like with the Prime Blocks?
(under development)
Exploring the interesting question of the number 1.
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