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.

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.

Students sketch base-ten blocks in this lesson that builds both number sense and fluency adding to 20!

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.

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.

Students will gain fluency with adding multiples of ten in this hands-on lesson that builds number sense.

10 is an important number in math! In this lesson, your students will build an understanding of what 10 really means and the many ways to make 10.

Here comes the Ten Monster! Get ready to learn about subtracting tens in this hands-on lesson.

The number ten has lots of friends, and they often come in pairs! Your students will sing a song, enjoy a video, play a game, and work on matching number pairs that make ten!