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Place Value Unit
Dear Third Grade Families,
Our Focus
The 1st six weeks your child will explore numbers within 100,000. Students will understand that digits have different values based on their placement within a number. They will develop number sense by using pictorial models to compose and decompose numbers. Students will be able to describe and compare numbers using place value, skip counting and exploring the concepts of odd and even.
Instructional Approach
Place value means that each position in a number has a different value associated with it, that is, 362 is three 100s, six 10s, and two 1s. Often, we teach children about place value by asking them to think about, the difference between the 2 in 12 and the 2 in 24. However, children learn more about place value by solving problems that involve collections of ones, tens and hundreds. When children learn about place value, they begin to understand that groups of 10 can be created and counted just like units of one. Concrete models and pictorial representations are used to help students develop a strong understanding of numbers and their value.
Family Support
You can help your child in several ways.
- Count within 1000 using skip counting strategies.
- Ask your child to compare two 6-digit numbers using <,>, or =.
- Explore and discuss the key terms in the box below.
Sincerely,
The Third Grade Math Team
Dear Third Grade Families,
Our Focus
In this nine weeks, your child will be using problem solving skills to analyze the attributes of geometric shapes and figures in order to draw conclusions about their properties.
Instructional Approach
The students will be classifying and sorting 2D shapes and 3D figures based on names or attributes such as shapes of faces, number of vertices, edges, and faces. They will also be learning the characteristics of different quadrilaterals such as rhombuses, parallelograms, trapezoids, rectangles, and squares.
Family Support
You can support your child at home in several ways.
- Ask your child to name the shapes they see on items in your pantry. For example- “What shapes do you see on the cereal box? What about on the can of green beans?
- Shape Scavenger Hunt- Have them look for shapes in their room. Before they begin, ask them to predict which shape they will find the most.
Sincerely,
The Third Grade Math Team
Vocabulary
Vocabulary
consecutive multiplies -Numbers which follow each other in order, without gaps, from smallest to largest.
Examples:
- 12, 13, 14 and 15 are consecutive numbers.
- 22, 24, 26, 28 and 30 are consecutive even numbers.
- 40, 45, 50 and 55 are consecutive multiples of 5.
compose - combine parts to make a whole (3 hundreds, 6 tens, 8 ones=368)
decompose - breaking a whole into a part .
349 ⇒ 300 + 40 + 9
expanded form - a way of writing a number to show the value of each individual digit.
Example: Put 925 into Expanded Form
925 = 900 + 20 + 5
expanded notation -It is shown as a sum of each digit multiplied by its matching place value (ones, tens, hundreds, etc.)
For example: 4,265 = 4 × 1,000 + 2 × 100 + 6 × 10 + 5 × 1
place value - The value of where the digit is in the number.
standard form -A general term meaning "written down in the way most commonly accepted" (368)
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