Kindergarten Math Keyword Search Series Blog post #1

Keyword: Counting to 20 (One-to-One Correspondence)

This is the bedrock of all math — think of it like learning the alphabet before reading. Each number gets matched to exactly one object, no skipping, no doubling up.

Here are some solid free and low-cost resources:

iKnowIt.com — Interactive online practice where kids count toys, shapes, and blocks, answering in multiple-choice or fill-in-the-blank format. It also explains wrong answers to help kids learn from mistakes. Great for classroom or home screens. I Know It

Education.com — Printable worksheets with visual activities like dot-to-dots and counting paths from 1 to 20, free to print. Education.com

Twinkl.com — 100+ teacher-made counting activities including number sorts, cut-and-paste worksheets, and themed counting sheets like the Dinosaur Counting to 20 activity. Twinkl

Proud to Be Primary (proudtobeprimary.com) — A curated list of number sense activities, books, and manipulative suggestions, including free resources, all focused on building counting fluency to 20. Proud to be Primary

You are always welcome to try our Kindergarten Math Series Apps. You can download them from the App Store.