Take your understanding of factors one step further! Use this lesson to classify factors as prime and composite numbers while creating factor trees.

It's as easy as one, two, three...four! Introduce your students to subtracting decimals in the tenth and hundredth place using a four-step process.

In this lesson, your students will compare numbers to one thousand using place value charts and symbols. Your students will love practicing with numbers!

Teach your students to create equivalent fractions by multiplying by different fraction forms of 1 whole like 2/2 or 4/4. This lesson also includes drafts of area models.

It's time-telling time with this fun lesson featuring Trudy Harris' 'The Clock Struck One.' Students will learning about time with a short story and hands-on practice with analog clocks.

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.

In this leafy, plant-themed lesson, students will use leaves as they practice recognizing various numbers from 1 to 15. This lesson can be easily adapted for use with specific ranges of numbers.

Freshen up on your understanding of division word problems with long division and one-digit divisors! Use this lesson to help students identify key division terms and solve word problems.

Adding fractions with unlike denominators just doesn't work like it does when the denominators are the same. Let's make it work! Students will add fractions with unlike denominators with sums between one and two.

10, 20, 30, and up! In this lesson, students learn strategies for multiplying one-digit numbers by multiples of ten (10 through 90) through practice problems and playing a fun, hands-on game.

Buzz, buzz! Can you count the five busy little bees? In this bee-themed lesson on counting and number recognition, students will use bees to learn how to count the numbers one through five.

Give first graders a sense of time by introducing them to telling time by the hour. Students who have mastered the numbers 1 to 12 will be eager to keep the class on a time schedule.

Counting collections are a great way to help students practice counting while gaining practice recording and justifying their thinking. Students will work specifically with the numbers 1-30 to develop fluency counting and writing numbers.

Your students will become junior math detectives as they hunt down the missing side of a rectangle by applying the area formula for rectangles. The only clues they have are the rectangle's area and the measure of one side.

Your students are probably used to answering questions. Give them a chance to ask their own with this imaginative lesson on reading comprehension and the ways one can use who, what, when, where, and why.

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!

Introduce place value to your emerging mathematicians while focusing on the numbers 11–20. In this lesson, students will practice separating teen numbers into 10 ones and some additional ones using unifix cubes and ten frames.

How are quadrilaterals connected? In this lesson, your students will learn about the relationship between quadrilaterals by drawing, defining, and labeling different ones.

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

Can your students link line plots with fractions? In this interactive, hands-on math lesson, students will learn how to use a line plot to add fractions and solve corresponding word problems.

Can you break a ten? An everyday exchange of money can help students think about regrouping to subtract. Students will use bundled popsicle sticks to see how values grouped into tens can be regrouped into ones to allow us to subtract.

What exactly does the number 97 mean? How about 454? In this lesson, students explore how two-digit numbers are made up of tens and ones. Then they use this understanding to subtract numbers within 1000.

In this lesson, your students will get hands-on practice comparing quantities! Students will compare using buttons, blocks, and their classmates.

Students will engage their analytical skills and literacy skills as they compare books within a series. The central activity in this lesson will have students identifying, comparing, and contrasting the shared features of books in a series.

As students re-read nonfiction texts, have them classify visual features and record learnings from the captions.

In this lesson, your students will explore the library in search of various genres of nonfiction texts. Teach this lesson at the beginning of the year to familiarize your students with the structure and organization of the library.

Make the number work for you! Use this lesson to teach your students to add mixed numbers with like denominators using the strategy of decomposition.

Help your class “jump” into number recognition with confidence! In this lesson, students will write numbers on sticky notes, place them in sequential order, and “jump” on the numbers while counting.

Teach your students to subtract mixed numbers with like denominators using the strategy of decomposition. This strategy helps students to manipulate and break down numbers to help them solve tricky subtraction problems.

In this lesson, students will construct their own number lines and bar models to find equivalent fractions.