Curated OER
Clock Arithmetic and Cryptography
Students explore the concept of modular arithmetic and cryptography. In this modular arithmetic and cryptography lesson, students use applets to explore modular arithmetic using a clock and Caesar Ciphers. Students exchange their ciphers...
Curated OER
Place Values - Subtracting
Students explore the concept of subtracting a number from a place value. In this subtracting from a place value lesson, students subtract numbers from a particular place value.
Curated OER
How Many Ways?
Second graders develop number sense. In this number sense lesson plan, 2nd graders use multiple ways to represent numbers including written numerals, tally marks and manipulatives. Students correctly use place value to the thousands place.
Curated OER
Free Printables: Alphabet Cards
In this alphabet worksheet, students cut out the alphabet cards, which have words and pictures to go along with each letter. This worksheet generator can print off 2 different sets of cards for the alphabet so that students can match up...
Khan Academy
Khan Academy: Multiply 1 Digit Numbers by a Multiple of 10, 100, and 1000
Practice multiplication problems like 5x500=2500. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Find Missing Factors (1 Digit Multiplication)
Find missing factors in 1-digit multiplication problems. Products are less than or equal to 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Multiply 1 Digit Numbers by 10, 100, and 1000
Practice multiplication problems like 5x100=500. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Multiplication and Division Word Problems (Within 100)
Solve word problems involving multiplication and division. Solutions will be less than or equal to 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Relate Division to Multiplication Word Problems
Find both the multiplication and division equation that can be used to solve a word problem. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints....
Illustrative Mathematics
Illustrative Mathematics: Analyzing Word Problems Involving Multiplication
The purpose of this task is for students to analyze different contexts in which multiplication is appropriate. CCSS.Math.Content.3.OA.A.3 Use multiplication and division within 100 to solve word problems
Illustrative Mathematics
Illustrative Mathematics: 3.oa Gifts From Grandma, Variation 1
The first of these is a multiplication problem involving equal-sized groups. The next two reflect the two related division problems, How many groups? and How many in each group? CCSS.Math.Content.3.OA.A.3 Use multiplication and division...
CK-12 Foundation
Ck 12: Elem Math: Multiplying Decimals by Multiples of 100
[Free Registration/Login may be required to access all resource tools.] For this learning module, students practice multiplying decimal numbers by multiples of 100. Includes video demonstrating a sample problem [1:50] and a set of...
Homeschool Math
Homeschool Math: Multiply and Divide Decimals by 10, 100, and 1000
Lesson includes a video & examples showing the common shortcut for multiplying & dividing decimals by powers of ten. [7:59] Provides exercises and word problems for practice.
AAA Math
Aaa Math: Multiplication Facts by 0, 1, 2, 3
This page explains and lists the basic multiplication facts for zero, one, two, and three. It also provides practice and games to improve multiplication skills. CCSS.Math.Content.3.OA.C.7 Fluently multiply and divide within 100
University of Cambridge
University of Cambridge: Nrich: Make 100
On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.
Illustrative Mathematics
Illustrative Mathematics: 3.oa, Md, Nbt Classroom Supplies
The purpose of this task is for students to solve problems involving the four operations and draw a scaled picture graph and a scaled bar graph to represent a data set with several categories. Aligns with 3.NBT.A.2;...