Standard: 2.NBT.A1b – The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
Grade level: Grade 2
Subject: Mathematics
Domain: Number & Operations in Base Ten
Teacher Overview
This standard helps students understand the concept of hundreds in the place value system. It is crucial as it lays the foundation for understanding larger numbers and performing arithmetic operations involving these numbers. Students should be comfortable with counting by tens and ones, and have a basic understanding of place value before tackling hundreds.
After mastering this standard, students will be able to understand and work with larger numbers, including thousands, and perform arithmetic operations with these numbers.
Common Misconception 1
Some students may think that 100 is just a larger version of 10, not realizing the place value significance. This misconception can lead to errors in understanding and using larger numbers.
Intervention 1
Use a place value chart and physical manipulatives like base-ten blocks to show the difference between tens and hundreds. Engage students in activities that involve grouping tens to form hundreds.
Common Misconception 2
Another common misconception is that 100 is simply 1 followed by two zeros, without understanding the underlying place value concept. This can hinder their ability to perform operations with larger numbers.
Intervention 2
Hands-on activities with base-ten blocks can help students visualize how 100 is composed of ten tens. Encourage students to build numbers using these blocks to reinforce the concept.
Prerequisite Knowledge
Students should understand basic place value concepts, including tens and ones, and be able to count to 100.
Subsequent Knowledge
Students will develop an understanding of larger numbers and place value, including thousands, and will be able to perform operations with these numbers.
Instructional Activities
- Counting objects in groups of 100.
- Using base-ten blocks to build numbers in the hundreds.
- Playing place value games that involve hundreds.
- Creating visual representations of hundreds using drawings or digital tools.
- Engaging in group activities where students count and compare quantities in hundreds.
