Third grade is the year of multiplication. Though it was most likely introduced to kids in second grade, third grade is when kids are tasked with mastering their times tables and developing a stronger understanding of this key operation. This guided lesson in understanding multiplication can help give third graders a leg up. For even more practice, consider downloading the recommended multiplication worksheets that accompany the lesson.
Fractions can be challenging when taught in an abstract way. That’s why this unit invites learners to engage with fractions and mixed numbers in very visual and concrete ways using number lines, tape diagrams and area models. Students will learn different strategies to practice identifying and generating equivalent fractions.
Geometry in third grade introduces kids to the idea that shapes have different categories (rectangles, rhombuses, etc..) attributes (four-sided, etc...) and areas of different values. This lesson, designed by our curriculum experts, provides the guided instruction and practice that third graders need to conceptualize shapes in a deeper way. For more practice, download and print the third grade geometry worksheets recommended as part of this lesson.
Fourth graders will discover the building blocks of geometry in this unit: points, lines, line segments and rays. Students will explore the properties of different shapes, including symmetry, parallel and perpendicular lines, and 900 angles. Students will apply their understanding as they learn to sort shapes based on these properties.
Your students will become junior math detectives as they hunt down the missing side of a rectangle by applying the area formula for rectangles. The only clues they have are the rectangle's area and the measure of one side.
This resource will help assess your students' mastery of concepts surrounding measurement and time. This worksheet will challenge your third graders with problems on area, perimeter, measurement, and elapsed time problems.
Area models are building blocks to more complicated multiplication and division. Use this lesson to refresh students on the relationship between multiplication and area to prepare them to use the area models strategy with larger numbers.
Help your students get creative as they apply multiplication skills to find the area of a community garden of their own design! In this lesson, students will practice finding the area of a rectangle within a real-world context.
Area is a geometric value that tells the size of a surface, and it is an important geometric concept that is commonly taught starting in third grade. Calculating the area of an object requires addition and multiplication skills, so after your student has mastered those concepts, you can help them move on to our worksheet resources for more practice in calculating area of different shapes.
Learn More About Area
The area of a shape is the size of the shape’s surface. An easy way to think about area is to think about how much paint you would need to cover the entire shape. There are a lot of different ways to calculate the area of a shape, so we’ve put together a guide to help you help your child get a head start on calculating area!
Area of Simple Shapes
Simple shapes, like squares, triangles, rectangles, etc. have specific formulas that you can use:
Square: area = length2
Rectangle: area = length × width
Triangle: area = ½base × height
Circle: area = π × radius2
Area by Counting Squares
Another way to calculate the area of a simple shape is to count up how many squares make up the shape if you put it on a grid. There are a couple ways to go about this way of approximating area:
More than half of a square counts as one full square and less than half a square counts as zero squares
Combine partial parts of squares to count as half a square or a full square.
Area of Difficult Shapes
Sometimes the shapes you work with aren’t simple shapes like rectangles or triangles. However, these difficult shapes will be made up of a combination of simple shapes (e.g., a triangle on top of a square). To calculate the area of these shapes, calculate the individual areas of the simple shapes and add them together to get the total area.
Now that you have an idea of different methods to calculate area, scroll up to practice with our resources, or move over to our volume resource page to see how the concept of area can be used with 3-D shapes.