Standard: K.CC.A1 – Count to 100 by ones and by tens.
Grade level: Kindergarten
Subject: Mathematics
Domain: Counting & Cardinality
Teacher Overview
This standard focuses on helping students develop their counting skills by counting to 100 by ones and by tens. It is crucial as it lays the foundation for future mathematical concepts such as addition, subtraction, and place value. Students should already be familiar with number recognition and counting from 1 to 10. They should also understand the concept of one-to-one correspondence.
After mastering this standard, students will be able to apply their counting skills to more complex mathematical operations such as addition and subtraction, and understand the concept of place value.
Common Misconception 1
Some students may think that counting by tens means skipping numbers, which can lead to confusion in understanding the sequence of numbers.
Intervention 1
Use visual aids like a number line to show that each number is still part of the sequence. Reinforce this with hands-on activities where students can physically place numbers in order.
Common Misconception 2
Students may confuse the order of numbers when counting by tens, thinking that numbers like 20, 30, and 40 can be interchanged.
Intervention 2
Practice counting by tens using songs or rhymes to reinforce the correct sequence. Use visual charts and group activities to help solidify the order of numbers.
Prerequisite Knowledge
Students should have a basic understanding of number recognition and be able to count from 1 to 10.
Subsequent Knowledge
After mastering this standard, students will be able to apply their counting skills to more complex mathematical operations such as addition and subtraction.
Instructional Activities
- Using number charts to count to 100 by ones and tens
- Group counting activities with physical objects like blocks or beads
- Counting songs and rhymes that emphasize counting by tens
- Interactive counting games on tablets or computers
- Daily counting practice during calendar time
