Curated OER
Make 10: Addition Strategy
What a brilliant way to present this topic! This presentation uses counters and an interactive techniques to show young mathematicians how to add numbers by creating groups of ten. The graphics make it easy to understand this concept....
Noyce Foundation
Apple Farm Field Trip
Monitor the growth of young mathematicians with a comprehensive addition and subtraction assessment. Using the context of a class field trip to an apple orchard, this series of four story problems allows children to demonstrate their...
Illustrative Mathematics
Many Ways to Do Addition
A great aspect of teaching math is that children have the freedom to solve problems using a variety of different strategies. The focus of this lesson is for young mathematicians to become aware of many ways of answering addition...
Birdville Independent School District
Friendly Numbers
There are a number of different strategies young mathematicians can use when adding two-digit numbers. This lesson focuses on making addition easier by rounding the addends to friendly numbers, with the resulting sum being adjusted...
Curated OER
Making a Ten
An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, students are taught how to first make a ten and then add on the rest. A similar method is also...
Illustrative Mathematics
Building toward fluency
Here is a great learning task that focuses on the development of areas in computational fluency including strategies in mental math. Young learners are guided through a list of addition expressions that help them visually understand the...
Curated OER
Number Lines
First graders examine the number line as an addition strategy. In this math lesson, 1st graders create a number line and use it to help them solve addition problems.
Curated OER
Addition
In this addition worksheet, students enhance their simple addition skills using addition strategies to solve the two worksheets of addition problems.
Curated OER
Addition Strategies: Compensation
In this math worksheet, students learn the addition strategy of compensation: adding an easy number like 10, 20 or 30 and then subtracting a very small number like 1 or 2. Students solve 12 problems on the page.