Tooth to teeth, and baby to babies! Has your third grader mastered the spelling of irregular plural nouns?

Can your second graders differentiate between singular and plural nouns? Let's find out! Use this sorting activity to let your students distinguish between singular and plural using regular and irregular plural nouns.

Kids completing this third grade math worksheet multiply by 1 to solve each equation and also fill in a multiplication chart for the number 1.

In this fall-themed worksheet version of the popular game two truths and one lie, learners will solve three equations and determine which two equations are true and which one is false.

Practice adding one to numbers within 10 with this first-grade addition worksheet!

Travel through the hundreds chart on a quest to one.

One more vegetable! This worksheet will have your students figuring out what happens when you add one more vegetable to the existing list.

In this worksheet, students will identify, count, and order numbers from 1-10 in order to gain a better understanding of one-to-one correspondence between numbers and pictures.

Use this glossary with the EL Support Lesson: One Less.

This discussion guide helps readers reflect on chapters 1–38 of The One and Only Ivan.

Ask your kindergartener to complete these one-digit subtraction facts, and they'll go above and beyond kindergarten standards in no time!

Give your first grader's math skills a boost with this delightful worksheet that asks them to complete a collection of one-digit addition problems.

Boost students’ possessive knowledge with the help of this worksheet’s creative questions! 

Help kids grasp the concept of subtraction by taking one away in this worksheet.

Learn the number 1 with this early math worksheet!

Children practice their one-digit multiplication facts with this fall-themed math worksheet.

Do your students need some extra practice transforming singular nouns into plural nouns? Use this simple but effective chart to help your students solidify spelling patterns of plural nouns.

Find the answers to 16 one- and two-digit division problems in this playful holiday worksheet!

Children practice their one- and two-digit division facts with this fall-themed math worksheet.

Help students get to know irregular plural nouns like the backs of their hands. Students will identify which words on this worksheet get irregular when the noun changes from singular to plural.

Which one is longer? Practice quantifying things in measurements using this beginner's worksheet!

This fun fraction worksheet introduces kids to the fraction 1/3.

Use these vocabulary cards with the EL Support Lesson: One Less.

Use this glossary with the EL Support Lesson: One More Please!

Your number 1 math star will love this starry kindergarten math worksheet!

Give learners targeted practice performing mixed operations with positive decimals in this one-page practice worksheet! 

Learners will practice dividing two-digit numbers by one-digit numbers in this division without remainders worksheet.

This is a great supplement to lessons about irregular plural nouns. Challenge your students to write the plural form of tricky words like fish, spy, person, wolf, birthday, library, mouse, calf, and more.

Practice one- and two-digit division facts with this 20-problem worksheet!

Children practice their one-digit multiplication skills with this Thanksgiving math worksheet.