Illustrative Mathematics
A Bobbie Bear's Buttons
Young mathematicians help Bobbie Bear pick colored buttons out of a box as they learn how to decompose numbers less than 10 into pairs of smaller numbers. To support young scholars with the process, consider creating a worksheet or...
Curated OER
Multiplication of Whole Numbers
Break up multiplication into more easily conceptualized math operations. Scholars first examine an array of apples and write a multiplication sentence to represent it. Then, they determine which of four sets of addends is equivalent to a...
Curated OER
Addition Sentence Match Worksheet
Beginners to addition will benefit from this twist on number sentences. For each of the six addition problems, they begin with the sum and examine eight pairs of addends, circling all that equal the number. This will get your class...
Curated OER
Number Lines and Whole Numbers
Use number lines to visually represent addition and subtraction equations. First, scholars complete an addition number sentence and represent the equation on a number line. Next, they examine a number line and write the corresponding...
Curated OER
Add and Subtract within 20
Here is a more interesting way to practice addition and subtraction number sentences. Learners complete two sum boxes, adding across and down then totaling for a final sum. They do the same with subtraction in two more boxes. Finally,...
Curated OER
Number Lines and Whole Numbers
Number lines are a great way to help beginning mathematicians comprehend addition and subtraction. They examine an addition equation and find the sum using the number line. Learners indicate the sum on the line and write it into the...
Curated OER
Make Ten Guided Lesson
Use these missing-addend problems to help your beginning mathematicians practice addition facts. They read sentences and solve, making 10 from different single-digit numbers. Each of these four problems is formatted differently, so the...
Curated OER
Add and Subtract within 20
The sums and differences only reach 20 in this arithmetic worksheet. Scholars answer 10 simple number sentences, some involving two numbers and others with three. They choose the correct answer from a list on the right. There are the...
Curated OER
Investigation - What's the Number?: Division
Seventh graders explore number sentences using a variety of strategies making each equation a true sentence. Students examine strategies such as patterns, trial and error, working backwards, and related problems. In groups, 7th graders...
Curated OER
Unknown Addends (to 20): Count the Blank Boxes
By filling in the blank squares, learners complete five addition number sentences both visually and numerically. For each problem, a frame is filled with a certain number of images (turkeys, candles, etc.) and a certain number of blank...
Curated OER
Array Picture Cards
Arrays are a visual way to practice multiplication and division. Using one of these twelve array picture cards, learners write a multiplication word problem describing what they see. After also recording a multiplication number sentence,...
Curated OER
100 Hungry Ants
After hearing the story, One Hundred Angry Ants, learners apply what they have seen to a math challenge. They choose one of three numbers: 12, 24, or 36. Imagining this were the number of ants going to a picnic, they consider how many...
Curated OER
Add and Subtract Equations with Equal Sign
Gain exposure to addition and subtraction symbols. First, pupils examine a visual number sentence (featuring Sponge Bob), filling in the correct symbol to make it a complete equation. Next, they read a run-on number sentence involving...
Curated OER
Multiplication/Division Number Series
Expand mathematical thinking with these prompts for scholars to use writing as they approach math. First, they use the numbers 3, 5, and 15 in an original multiplication number story, followed by a related division story. Encourage...
Curated OER
Add and Subtract Equations
One of these addition number sentences is incorrect: which one is it? Beginning mathematicians examine two simple equations, circling the one that is correct. An explanation on the bottom walks them through the processing, including...
Curated OER
Math Match Up!
Help learners solve problems using multiplication and repeated addition. Using counters, learners will be paired up to solve problems. They will go through a series of questions and show models with the counters for the solution. Then...
Curated OER
Two Numbers to Make a Total
In this addition worksheet, students practice figuring out 2 different ways to come up with 2 different number sentences with the following sums: 12, 16, 20, 17 and 30. Students write their answers in the boxes and circles provided.
Curated OER
Tic-Tac-Toe Math
In this number sentence worksheet, 3rd graders figure out how the tic-tac-toe code words and then fill in the number sentences in the code. Students complete 10 coded number sentences.
Curated OER
Writing Number Sentences
Students practice writing number sentences. After reading real world problems, they describe the same situation by writing a number sentence. Students use algebra tiles, or counters, to demonstrate the use zero pairs in solving...
Curated OER
Addition Properties
Student study addition properties. In this addition properties lesson, students use multiple methods to solve various types of problems. Students illustrate and describe in various ways the Commutative Property of Addition. Students...
Curated OER
Writing a Number Sentence
Third graders analyze word problems. In this number sentence lesson, 3rd graders evaluate word problems. Students create number sentences from word problems.
Curated OER
Multiplication and Division - Number Story
Students solve a number story. In this mathematics lesson, students create a division or multiplication number story on Wiki. Students solve the number story that a classmate has written.
Curated OER
Subtraction with Counters
First graders practice subtraction with manipulatives. In this subtraction lesson, 1st graders use M&M's to count and then take away. They write number sentences to match their subtraction problems.
Curated OER
Multiply and Complete Pineapple Exercise
In this multiplication worksheet, students complete a number sentence about multiplying 3 groups of 4 pineapples. Students complete 1 number sentence.