Numbers and Operations in Base Ten (2b): Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

B. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.


Quarter 1 (Continued in quarters 2 through 4)

Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

B. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.

This includes representing 100 with a "flat" base ten block (in quarters 2 - 4).
** Continue in quarters 2, 3, and 4 through routines and classroom discussion.


Enduring Understanding

Understanding place value leads to number sense and efficient strategies for computation.

Essential Questions

How does a digit's position affect its value?

Vocabulary (online dictionary, HCPSS Vocabulary Cards)

Place Value, Digit

Rich Tasks for Multiple Means of Engagement, Expression, and Representation (UDL)

1. Ten and Some More (VandeWalle, K-3, p 55). Use a simple two-part mat, and have children count out ten counters onto one side.
Next have them put five counters on the other side. Together count all of the counters by ones. Chorus the combination, "Ten and
five is fifteen." Turn the mat around, "Five and ten is fifteen." Repeat with other numbers in a random order but without changing the
10 side of that mat.

Rich Problems

Choose a number between 1 and 10. Show that number in as many ways as you can. Choose a number between 20 and 30. Show that number in as many ways as you can. (Small, Good Questions, Great Ways to Differentiate Mathematics Instruction, p 40).

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Print Resources:

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Math by All Means Place Value 1-2
(56-71)
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Math Connections K-3
(7, 32, 70)
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Mental Math in the Primary Grades
(15-16)
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Nimble with Numbers 1-2
(104)




Web Resources

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Games and Centers
Lessons
Student Resources
Video Segments
Printable Centers
My Double Ten-Frame Riddle
Teens on the Ten Frame
Make 10 Bundles
Base Ten Concentration (2 Digit)
Representing Two Digit Numbers with Base 10 Blocks

Printable GamesTens and Ones Game

Online Games
Zap

Lesson Plans
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Hundred Board Logic
Guess My Number

Mystery Number (Game/Lesson Seed)


Instructional Ideas
Teaching Teen Numbers
Teen Number Instructional Idea
Online Tools
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Interactive Hundred Chart
Base Ten Blocks

PrintablesHundred Chart
Teens on the Ten Frame Book Template

Beg. Math Adventures of Lollipop Dragon:Place Value-Tens and Ones









Questions/Comments:

Contact John SanGiovanni at jsangiovanni@hcpss.org.


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Howard County Public Schools Office of Elementary Mathematics Curricular Projects has licensed this product under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.