How to Reason

Third graders explore place value to the ten-thousands place. In this amazing, 21-page place value lesson, learners represent numbers in standard and expanded form, and use technology to represent numbers to 9,999.

These math puzzles are sure to get your first and second graders thinking. Nine word problems about odds and evens, as well as greater than and less than, keep learners guessing. If you're working on mental math in your class, use these...

Having a good number sense is key to understanding place value. This video clearly explains the place values that comprise a decimal number. It is a very straight forward presentation and would be appropriate for grades 3, 4, or 5. Sal...

Understanding place value is a basic mathematics skill. This Khan Academy video shows students how to write the number 14,897 in the expanded form. He explains that the 7 in the ones place is the same as 7x1, the 9 in the tens place is...

Third graders determine the outcome of each of the following situations and justify their findings: even number + even number = ?, even number + odd number = ?, odd number + odd number = ?, and odd number + even number = ?.

In this math learning exercise, students answer multiple choice questions about odd numbers, standard form, place value, and more. Students complete 10 problems involving up to 5 digit numbers.

A short video introduces place value in addition and subtraction. As a class, your learners identify all even numbers up to one hundred and explain the pattern. They use addition strategies to fill in the missing numbers on the number grid.

Get mathematicians engaged with number terminology using this puzzle activity! Learners determine the selected number from a hundred board by eliminating numbers using clues. As a group, each learner has a specific role, outlined in the...

Multiplying with multiples of 10, 100, and 1,000 provides an opportunity to discuss patterns that arise with zeros. The class uses these patterns to solve problems. Then they rotate through three work stations, including a computer-based...

Once your class has mastered the identification of fractions, have them locate fractions on a number line. This sheet reinforces interval sizes of parts included in a whole, and directly relates to the standards associated with Common...