In this lesson, students learn how to multiply fluently using the half of 10 strategy. By understanding the quick facts of 10s and addition doubles, they can quickly and accurately solve multiplication problems. This strategy allows them...

The video “Subtract by Making Tens” uses the making tens strategy modeled with a ten frame or number line to solve several subtraction problems.

In this lesson, students will explore different strategies to prove correctness, including using place value, breaking numbers apart, and utilizing the commutative and associative properties of addition. By analyzing examples and...

Pupil outcome: I can use efficient strategies to solve addition and subtraction problems. Key learning points: - Known facts can be used to help us solve equations and problems efficiently. - Numbers can be partitioned to bridge ten to...

The video “Model Multistep Problems” uses base ten block models to solve two-step problems involving addition and subtraction.

In this video, students learn to anchor problems to number ten, a common way to problem solve. For example, the problem 9+3 might be unfamiliar, but if we split number 3 into 1+2, we can create a ten. We are left with 9+1+2, or 10+2....

In this video, students are taught to round the lead digit to the nearest hundred and then add the rounded numbers to get an estimated sum. By comparing this estimate with the actual sum, students can determine if their answer is...

The force is strong in this video. Join us for some Jedi math tricks to help you solve addition and subtraction problems using mental math strategies. Tools like doubles facts, making tens, and breaking apart numbers are great ways to...

Let's head to the park and help out our MightyOwl friends track what their working on. In this video we will be solving addition and subtraction problem using mental math strategies such as ten facts and doubles facts. Let's go!

Pupil outcome: I can solve problems using addition and subtraction, including bridging through ten. Key learning points: - Different subtraction calculations need different strategies. - Different addition calculations need different...

Pupil outcome: I can solve problems involving the addition and subtraction of two-digit numbers. Key learning points: - When solving problems, it must be decided whether to add or subtract in order to solve it. - If the ones digits...

Pupil outcome: I can use strategies to make solving calculations more efficient. Key learning points: - Equivalent calculations can be used with the same difference or same sum to make calculations ‘easier’. - A number line can be used...

Pupil outcome: I can solve problems using column addition and subtraction Key learning points: - When solving problems, the column addition and column subtraction algorithms are sometimes the most efficient methods. - If the numbers have...

In this video, the speaker introduces the GROW model, a tool for problem-solving and goal-setting. The acronym GROW stands for Goal, Reality, Obstacles, and Way forward. The speaker discusses examples of goals and encourages the audience...

“The Sum of 10 and a Number” shows how to use the “making 10” strategy to find the sum of three addends.

“Counting Up to Subtract” demonstrates how to use the counting up strategy to subtract within 20.

In this video, students learn how knowing their 10s facts can help them solve multiplication problems quickly and fluently. The video demonstrates strategies for multiplying by subtracting from groups of 10. The commutative property of...

This video teaches how to break apart numbers to make them easier to add. The video demonstrates different ways to break apart numbers using place value blocks, drawings, words, and properties of addition. It also provides examples of...

Pupil outcome: I can solve problems involving subtraction of two-digit numbers that cross the tens boundary. Key learning points: - Some problems involving the subtraction of two-digit numbers, can be solved by bridging 10 - We can look...

I wrote this fun math story for my kindergarten and first grade classes to help work on general problem solving, and also to teach and review addition, subtraction, double numbers, and ways to make ten. Hope you enjoy! Chapter 1a...

I wrote this fun math story for my kindergarten and first grade classes to help work on general problem solving, and also to teach and review addition, subtraction, double numbers, and ways to make ten. Hope you enjoy! Watch Chapter 3