# Archive | Number and Operations

## Odd and Even Numbers – Numbers to 100 – Level 2 – Vol. 1 – Tutorial

This is a free Odd and Even Numbers tutorial:

Math lessons

Numbers and Operations

## Place Value – Level 3 – Volume 3 – Numbers to 999,999 – Tutorial

This is a free Place Value tutorial:

Math Lessons

Number and Operations

## Number and Operations

Addition and Subtraction Vol. 1 – This free kindergarten math lesson reviews the fundamental skill of counting forward and backwards. Children act out number stories using objectives and pictures with Henrietta at the Hippo Hotel. The problem solving approach, real life context and immediate feedback will make addition and subtraction fun and relatable for your young children.

## Number and Operations

Addition Two Digits plus One-Digit Level 1 Vol. 1 – Children practice adding a 2-digit number plus a 1-digit number with Reba Rabbit in this free, first grade number and operations lesson. First, kids estimate the sum and then use a number line and virtual manipulatives to develop mental addition strategies and solve addition problems.

## Number and Operations

Addition, Adding Three or More Numbers Level 2 Vol. 1 – The strength of this free number and operations lesson is that it uses concrete models to help students develop number sense and mental math in a trial and error, problem-solving approach, including problems with multiple right answers. Children join Kirima and the penguins to the ice carnival and add, compose and decompose three or more numbers with on the way.

## Number and Operations

Fraction, Fractional Part of a Whole Level 3 Vol. 1 – This creative and free number and operations lesson helps students learn to identify the fractional part of a whole. Words like numerator and denominator are reviewed. Children join Michiko at the Kite Factory where they use fractions to create and color their own kites.

## Number and Operations

Problem Solving, Addition and Subtraction with Decimals Level 4 Vol. 1 – In this free number and operation lesson, your children will help Omar check his receipts and solve addition and subtraction problems with decimals. Students first, estimate if the receipt total is correct or incorrect using mental math. If the receipt has errors, they may use a calculator to make the corrections.  This is a not only a foundational skill, but also a fun way to practice mental math and real-world calculations.

## Number and Operations

Fractions, Converting Mixed Numbers and Improper Fractions Level 5 Vol. 1 – This free number and operations practice activity is useful for practicing with improper fractions and mixed numbers. This is a crucial skill for every fifth grade student as it serves as the foundation for operating with fractions in middle school and beyond. In this lesson, students must match equivalent mixed numbers and improper fractions.