Illustrative Mathematics
Party Favors
Pia is putting stickers into party bags. She starts by putting 10 stickers in each bag, and over the course of a week she adds several bundles of ten stickers to each bag, as well as making more bags. Second graders must find the number...
CK-12 Foundation
Factorization of Quadratic Expressions: Boxes for Factoring
Create rectangles from the terms of a trinomial. The interactive provides virtual algebra tiles for participants to use to create quadratic trinomials. Pupils use the tiles and arrange them into a rectangle to find the factors of the...
CK-12 Foundation
Mixed Numbers in Applications: Sharing a Chocolate Bar
The advantage of a virtual chocolate bar: it never melts. Learners use an interactive to share a chocolate bar among friends. Some challenge questions assess understanding of fractions in relation to this context.
101 Questions
Wedding Cake Ribbon
Customers often want ribbon around fancy cakes, but how does a baker know how much ribbon to buy? Scholars view a cake with multiple layers in different geometric shapes. They must figure the perimeter and circumference and add them...
Magic of Physics
Unit Converter I
Talk about a cool tool! Convert between units with the click of a mouse using a handy online resource. Enter the starting measurement and units for quantities such as torque, speed, and inertia, then sit back and relax while the computer...
Mathematics Vision Project
Module 8: More Functions, More Features
A piece of this and a piece of that, add domain restrictions and create a piecewise function. Young scholars explore piecewise functions with and without context. Functions include both linear and quadratic parts. The module is the...
Math Antics
Working with Parts
Get a clearer picture of working with fractions. While continuing to work with fractions as parts, the video shows how to use drawing to compare and add fractions. Worksheets then provide opportunities for pupils to practice comparing,...
US Department of Commerce
Diversity: Census Questions Over Time
The story of race in the United States continues to evolve, and the numbers show it. Using data from the last two census counts, learners consider recent demographic shifts. They then analyze the information to hypothesize: What could...
PBS
Reading Adventure Pack: What's Next? The Very Hungry Caterpillar
A series of hands-on activities follows a reading of The Very Hungry Caterpillar by Eric Carle. Learners create a paper collage to explore the beginning, middle, and end of days of the week, numbers, and more. They grow a butterfly...
National Endowment for the Humanities
The Glass Menagerie: Key Themes
Using the list of expressionist techniques generated in the first activity, groups analyze how Williams uses these techniques to develop one of the play's themes. The whole class then shares and discusses the examples they found...
Curated OER
Add 29, 39, 49 To Any 2-Digit Number
In this addition worksheet, students solve 18 problems in which the number 29, 39, or 49 is added to a two digit number. There are no hints or examples. Problems are in horizontal format for mental math.
Curated OER
Add 19 to Any 2-Digit Number
In this addition instructional activity, students solve 18 problems in which the number 19 is added to a two-digit number. No hints or examples are provided.
Curated OER
Reversing Numbers
Second graders solve a math word problem involving the addition of two digit numbers. They discuss the problem as a class, independently explore the problem, and discuss as a class the solution and how they organized their reversed...
Curated OER
Numbers: Even/Odd
In this even and odd numbers worksheet, students analyze 10 numbers and check the correct box for even or odd. Students may need to add two numbers first. There are no examples.
Curated OER
Addition and Subtraction Mix--Level 2 Mix
Simple addition and subtraction is the focus of this worksheet which has students solve 100 addition problems and 100 subtraction problems involving single and double digit numbers.
Curated OER
Addition and Subtraction Mix--Level 3 Mix
Simple addition and subtraction is the focus of this worksheet which has students solve 100 addition problems and 100 subtraction problems involving single and double digit numbers.
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