The Number Strand in the Kawartha Pine Ridge District School Board's Grade 4 curriculum covers key concepts in understanding and working with numbers. This strand emphasizes the importance of representing, comparing, and calculating with whole numbers, decimals, and fractions. The following sections outline the main topics covered, along with sample problems and suggested videos for further learning.
1. Whole Numbers
Reading, Representing, Composing, and Decomposing Numbers:
Students learn to read and write numbers up to 10,000, represent them using various tools, and understand how these numbers are used in everyday contexts.
Sample Problem: Write 7,345 in words and represent it using base-ten blocks.
Video: Understanding Place Value - A video on how to read and write large numbers, understanding place value, and using visual aids.
Comparing and Ordering Numbers:
Students are taught to compare and order numbers up to 10,000, understanding greater than, less than, and equal to relationships.
Sample Problem: Arrange the following numbers in ascending order: 3,920, 7,043, 2,981, 4,507.
Video: Comparing Numbers - A guide to comparing and ordering numbers using place value.
2. Decimals
Reading, Representing, Comparing, and Ordering Decimals:
Focus on decimal tenths and hundredths, where students learn to read, write, compare, and order these numbers.
Sample Problem: Compare the following decimals and arrange them in descending order: 0.75, 0.5, 0.85, 0.6.
Video: Decimal Place Value - An introduction to understanding and comparing decimals.
Rounding Decimals:
Students practice rounding decimal numbers to the nearest whole number or nearest tenth.
Sample Problem: Round 4.36 to the nearest whole number and to the nearest tenth.
Video: Rounding Decimals - How to round decimal numbers accurately.
3. Addition and Subtraction
Addition and Subtraction of Whole Numbers and Decimals:
Techniques for adding and subtracting large numbers and decimals, including using estimation and standard algorithms.
Sample Problem: Add 4,768 and 3,245; subtract 7,321 from 9,853.
Video: Adding and Subtracting Decimals - Methods and tips for working with decimals in addition and subtraction.
4. Multiplication and Division
Multiplication and Division of Whole Numbers:
Students learn to multiply two- or three-digit numbers by one-digit numbers and perform division, understanding remainders.
Sample Problem: Multiply 234 by 7; divide 1,678 by 4.
Video: Multiplication Strategies - Techniques for multiplying large numbers.
Understanding Properties of Operations:
Emphasis on the commutative, associative, and distributive properties to simplify and solve problems.
Sample Problem: Use the distributive property to solve 5 × (8 + 4).
Video: Distributive Property - A visual explanation of the distributive property.
These resources align with the specific expectations outlined in the Kawartha Pine Ridge District School Board's curriculum for Grade 4, providing a comprehensive framework for teaching and learning in the Number strand(Number 1).