Teen Builders Slides
Teen Builders
Building Numbers 11 to 19
🏗️ 🚧 👷
The Power of 10!
Every teen number starts with one full group of ten.
1
2
3
4
5
6
7
8
9
10
"10 and no more!"
Building 11
11
11 is...
10 ones
and 1 more one!
10 + 1 = 11
Building 14
14
14 is...
10 ones
and 4 more ones!
10 + 4 = 14
Construction Challenge
If I have 10 ones and 7 more ones...
10
7
=
10 + 7 = 17
Say the number together!
Teen Builders Teacher Guide
Teen Builders Teacher Guide
Target: K.NBT.A.1 | Focus: Numbers 11-19
Learning Objective
Students will be able to compose and decompose numbers from 11 to 19 into ten ones and some further ones, using objects or drawings, and record each composition or decomposition by a drawing or equation.
Key Vocabulary
- Ten Frame
- Composing
- Ones
- Teen Number
Lesson Flow
1
Introduction (The Ten-Building Site)
Use the Teen Builders Slides to introduce the concept. Emphasize that every teen number has "one full truck" of ten items.
"Builders, we have a big job today! We are building the numbers 11 through 19. Every teen number starts with 10. Let's count to 10 together..."
2
Guided Practice (Building Together)
Work through Slides 3 and 4. Ask students to show "10 and some more" using their fingers or physical manipulatives (snap cubes).
Teaching Tip: Use the phrase "10 and ___ more" consistently before saying the number name.
3
Matching Activity (Hands-On)
Distribute the Teen Match Cards. Students should work in pairs to match the equation cards to the numeral cards.
- Scaffold: Give some students cards 11-13 first.
- Challenge: Ask students to write the equation on the back of the number card.
4
Independent Work
Students complete the Teen Builders Worksheet. Circulate and check for understanding, specifically looking for students who might confuse the place value of the 1 (thinking it represents '1' instead of '10').
Watch Out For!
Reversing Digits
Students might write 13 as 31. Remind them the 1 (the group of ten) always comes first because it's the "biggest" part of the build.
Counting by Ones Only
Students may try to count all blocks 1-14 instead of identifying the "ten rod" immediately. Encourage subitizing the ten.