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Sieve of Eratosthenes: An ancient way of finding prime numbers. Eratosthenes was a mathematician and librarian in ancient Alexandria. He invented an algorithm, called the sieve of Eratosthenes, to collect prime numbers. This fun chart helps students see not only the prime and composite numbers, bu
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\$3.50
11 Ratings
4.0

ZIP (879.85 KB)

A fun way to find and have a "keepable" record of prime and composite numbers. This is a very engaging activity and would be great for an observation day! File comes with 3 pages, which includes the sieve, student directions as well as teacher questioning ideas. Also, website links to the Sieve of
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\$1.75
12 Ratings
4.0

PDF (274.12 KB)

Use this activity to introduce prime and composite numbers. Students will become motivated to learn a new skill in such a fun way!!!
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\$2.00
13 Ratings
3.9

PDF (1.74 MB)

Students work through a hundreds chart sorting out prime and composite numbers by using their knowledge or multiples or multiplication facts. Introduces prime & composite numbers. Also enforces multiplication as well as multiples. Sieve of Eratosthenes, Key, & Instructions included.
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\$3.00
8 Ratings
4.0

PDF (134.06 KB)

This worksheet set includes printables for art or math that students can color in to discover patterns based on multiples of 2, 3, 4, 5, 6 and 7. Directions include a short bio of Eratosthenes, and intro to the sieve: that it is used to find prime numbers up to any amount. Four different colored
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\$1.25
3 Ratings
4.0

PDF (5.66 MB)

This worksheet leads you through using Eratosthenes' method to find the first 25 primes (within the numbers from 1 to 100)
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DOCX (88.09 KB)

This is a Math Interest Center or a worksheet activity. The project needs transparent film for printing. The overlays or pages lead students to understand how to select the prime numbers from a list 1 - 100. There are many other games in my TPT store -- check them out!
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ZIP (4.48 MB)

This is the first optional worksheet in the Basic Algebra (Elementary Algebra or Algebra 1) series. It covers a technique to quickly find prime numbers and how to use some time-saving methods to determine if a natural number is prime or composite.
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Math Minis Worksheet - Prime and Composite Numbers This is a short activity that reviews prime and composite numbers. Students will need to identify all of the prime and composite numbers that are less than 100. There is a little section titled "Something Extra . . ." that introduces "emirps" as
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FREE
25 Ratings
4.0

PDF (1.86 MB)

This is a worksheet to introduce students to prime numbers through a method used by Eratosthenes. Students circle the prime numbers and cross-out the composite numbers. Easy to follow instructions are on the worksheet. Students will better understand this math concept and have fun finding the prime
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FREE
7 Ratings
4.0

PDF (105.71 KB)

You'll want to complete this with students, or possibly release after teaching how it works with the first few multiples. If you need a refresher on how it works: https://www.khanacademy.org/computing/computer-science/cryptography/comp-number-theory/v/sieve-of-eratosthenes-prime-adventure-part-4
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A fun way to get your students introduced to, and learning, prime numbers! Includes a Sieve of Eratosthenes grid from 1-100, an engaging and fun video link students can follow along with to fill out the sieve, and a number sort to have students work with identifying prime and composite numbers. The
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FREE
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PDF (200.45 KB)

The Montessori Sieve of Eratosthenes.
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FREE
3 Ratings
4.0

PDF (32.65 KB)

Escape rooms and breakout classrooms have found their way into today's elementary classroom! They are such a great way to increase student engagement and to promote collaborative learning. This multiplication escape activity is a perfect way to culminate your fourth grade multiplication unit.Here's
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Also included in: 4th Grade Math Escape Bundle

\$3.00
69 Ratings
4.0

PDF (18.05 MB)

This partner game is a fun way to introduce or reinforce prime and composite numbers. This game also reinforces the 4th grade Common Core standard- MCC4.OA.4- Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine w
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\$3.50
\$2.50
42 Ratings
4.0

PDF (1.28 MB)

October 3, 2014: Please note, this is now 87 fun filled pages, and includes everything below with additional activities: Activity: Dude, Where's My Locker? These are 10 different "clue games" about multiples and factors to find a locker. Includes a Do It Yourself sheet so your students can make the
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\$19.95
6 Ratings
4.0

PDF (25.35 MB)

Montessori BUNDLE! ***GROWING BUNDLE*** Now over 300 pages of activities! Montessori Materials teach children fundamental skills in a unique and exciting hands-on, discovery based way. So many beautiful Montessori tools for children are in this bundle. Get ALL of my Montessori Math and Language work
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\$75.00
\$30.00
10 Ratings
4.0

ZIP (27.17 MB)

Factoring. Prime Factorization. Greatest Common Factor. Least Common Multiple. This is a series of worksheets designed to assist students in achieving mastery in calculation skills for factoring using prime factor ladders. If you are not teaching factoring using this methodology you want this packa
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\$4.00
17 Ratings
4.0

PDF (2.89 MB)

The "In Your Prime" Game is based on The Sieve of Eratosthenes, which is an ancient method of finding the prime numbers. Students will need to understand the rules of divisibility well in order to make judgments about whether the number they have landed on is prime or not. You may want to review the
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\$1.99
13 Ratings
4.0

PDF (1.23 MB)

Students will learn how to identify and use prime, composite, square and triangular number. Contains: Prime Numbers/ The Sieve of Eratosthenes Factor Trees (Prime Factorisation - 2 pages) Prime or Composite Sort Prime and Composite Who am I? Square Numbers (2 pages) Triangular Numbers Total: 8 wo
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\$4.00
13 Ratings
3.9

PDF (555.14 KB)

Let’s connect! The Literacy Loft BlogThe Literacy Loft on Instagram The Literacy Loft on Pinterest The Literacy Loft on Facebook Email: Jessica@theliteracyloft.com You might also like…. Good Morning, Sunshine! Math Morning Work for the Year! 3rd Grade (A Growing Bundle)Good Morning, Sunshine! Ma
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\$3.00
13 Ratings
4.0

PDF (2.44 MB)

Simply copy and use these comprehensive sketch notes for number theory including a sieve of Eratosthenes, prime factorization, GCF and LCM. Included are two different practice activities and patterns and an idea for an art activity to support your lesson. My students love this unit - maybe because
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\$3.00
11 Ratings
4.0

PDF (2.24 MB)

Students will be able to discover the differences between prime and composite numbers as having one or more factor pairs. Students are able to find all prime numbers between 1 and 100 using the sieve of Eratosthenes. Students use factor rainbows to order all factor pairs of a number.
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\$2.00
3 Ratings
4.0

PDF (236.03 KB)

Give your kids the opportunity to show what they know about math in a fun and creative way! This product, which focuses on helping students practice their understanding and knowledge of Prime and Composite numbers by using the Sieve of Eratosthenes, is fully digital in Google Slides and requires no
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\$3.50
2 Ratings
4.0

ZIP (6.81 MB)

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