Let’s start building numbers! Just as building skyscrapers is a visual representation of mathematics, students will use the visual representation of base-ten blocks to add—or build—onto a two-digit number.

Who doesn’t like to spend money and plan parties? Students will subtract two-digit numbers as they calculate the remaining money for their party supplies. They will subtract in multiples of ten and focus on place value.

What does it mean to expand a number? Use this lesson plan to help your students understand how to write the expanded form of two-digit numbers.

In this lesson, students will learn how to add a one-digit number to a two-digit number. This will help students build upon the skills needed for regrouping larger numbers.

Help your students make sense of the greater than, less than and equal to in this interactive lesson! Your students will have opportunities to compare either two-digit or three-digit numbers.

Dive deep into word problems with this lesson that teaches students to sketch base-ten blocks to add multiples of 10 and two-digit numbers. Use alone or with the lesson plan Let's Build It! Two-Digit Addition.

In this engaging, hands-on lesson, students solidify their understanding of place value by adding and regrouping two-digit numbers using M&Ms.

Introduce students to the quarter in this hands-on lesson. This is a great way to reinforce double digit addition.

Students get practice composing and comparing two-digit numbers as they compete to collect the most cards while playing the Hungry Alligator game. This lesson can be used alone or with the lesson plan Greater than Less Than Equal to Game.

Your students will turn boring number sentences into fun, Christmas-themed word problems! They will get practice with math and writing as they use their creative juices to write and solve single digit addition word problems.

Learning to quickly identify groups of 10 will be very helpful when your students begin working with multiple digit numbers. In this lesson, your students will work with manipulatives to make number pairs.

Get your students synthesizing various subtraction strategies as they work with a partner to solve word problems. This lesson can be used alone or with the lesson plan Show Me the Money! Two-Digit Subtraction.

Double, double toil and trouble! Use two dice to roll up to 100 with one-digit sumations. In this lesson, students will play a place value game where they race to get to 100 by converting ones to tens.

In this hands-on lesson plan, students will learn all about place value while practicing their teen numbers. Can be used as a stand alone or support lesson for the Place Value Practice lesson plan.

Your class will love this number comparison lesson that allows them to be hands on in their classroom. Students will use blocks to understand the difference in numbers and what they represent.

Students put their understanding of one and 10 more to work as they write word problems for classmates to solve. This lesson plan can be used alone or with Picture Addition.

Build a strong foundation in place value with a fun game where students create groups of ten as they race to 100. Can be used alone or with the lesson plan Place Value Party.

Today is your lucky day! In this fun and engaging St. Patrick's Day lesson plan, students will solve subtraction facts up to 10 and draw St. Patrick's Day themed pictures to match each math fact.

Every student can be a magician after this lesson in mentally adding and subtracting by 10. No previous magic training required!

Plan ahead for when you'll be out of the classroom! Planning for a substitute in the classroom is no problem at all with this daily sub plan. Your substitute can keep your students learning in your absence by using this packet of lessons, worksheets, and activities.

This bear-y fun lesson will help your students understand addition and subtraction and reward their efforts with a sweet treat!

Students will play the card game War to learn about place value and comparing numbers using the terms "less than", "greater than", and "equal to".

Now that your first graders are able to count consecutively, introduce them to the tens and ones place values. Using tens and ones blocks will make math easy and fun for everyone!

Build a solid foundation in number sense with this lesson all about the friendly number 10! Students will count with both fingers and base-ten blocks. This lesson can be used alone or with the lesson plan Place Value Concentration.

Put your students to the test with this lesson that helps them learn the tens and ones places with a memory game and worksheet!

Introduce hundreds place value to your students. Increase their knowledge of place value while they enjoy working with ones, tens and hundreds blocks.

Now that your first graders have mastered numbers to 100, extend the counting sequence to 120 with this scaffolded lesson. Use this EL Support Lesson alone, or alongside the lesson plan 120 Steps.

In this lesson, your students will have the chance to see how rain falls from clouds by creating their own miniature rainy day! This hands-on lesson gets students excited about science!

What first grader wouldn't want ten dollars? This lesson uses one and ten dollar bills to teach students place value concepts as they develop fluency adding multiples of 10. Use alone or with the lesson plan Ten Time.

Help your students understand place value with this hands-on lesson. Using place value cards and interlocking cubes, they'll represent different numbers in a fun, social manner.