Bring your kindergarten math lessons to life with ready-to-use instructional slides designed to accompany Kindergarten Magic of Math Unit 9: Comparing Numbers & 1 More/1 Less (0–20).

These slides guide students through two weeks of clear, visual instruction as they compare numbers to 20 and explore numbers that are one more and one less. Each lesson supports whole-group instruction, meaningful math discussions, visual modeling, and guided practice.

Week 1: Compare Numbers to 20

Students develop comparison skills as they:

• Compare sets to determine which has more or less
• Identify groups that are equal or not equal
• Compare numerals using a number line
• Use double ten frames to compare teen numbers
• Find numbers that are greater than, less than, or equal to a given number
• Explain their mathematical thinking

Week 2: One More and One Less

Students explore number relationships as they:

• Find one more by counting on
• Find one less by counting back
• Use a number line to visualize changing numbers
• Identify the numbers that come before and after
• Determine the number between two numbers
• Apply their skills through mixed review

What’s Included

• Two weeks of instructional slides
• Teacher-guided mini-lessons
• Student-friendly visual models
• Math vocabulary support
• Discussion questions and math talk prompts
• Modeled examples
• Guided practice
• Skill review

These instructional slides make it easy to introduce each skill, model number relationships, and guide students through meaningful practice. The lessons follow the same sequence as the printable unit, helping you move smoothly between instruction and hands-on learning.

Please Note: These slides are designed to accompany the printable Kindergarten Magic of Math Unit 9: Comparing Numbers & 1 More/1 Less (0–20). Printable games, manipulatives, partner activities, and independent practice pages are included in the corresponding printable unit and are not included with the instructional slides unless otherwise stated.