Lesson 3

10 Tens

Est. Class Sessions: 1–2
X

Mathematical Standards

1.NBT.A
Extend the counting sequence. (1.NBT.A.1)
1.NBT.B
Understand place value. (1.NBT.B.2, 1.NBT.B.3)
1.NBT.C
Use place value understanding and properties of operations to add and subtract. (1.NBT.C.4, 1.NBT.C.5)
1.MD.C
Represent and interpret data. (1.MD.C.4)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.

Students focus on grouping quantities by ten and counting the leftovers. To work with a large number, students predict the total number of letters in the first names of all students in the class then use connecting cubes to compare the total to 100. Students then recognize that 100 is 10 groups of ten.

Content in this Lesson

  • Predicting the total number of letters in first names in the class.
  • Grouping and counting objects by tens and ones left over.
  • Representing 100 as 10 tens.
  • Representing and identifying numbers to 100 using counters, 100 Chart, drawings, and symbols [E1].
  • Representing the partitions of two-digit quantities as tens and leftover ones [E2].
  • Comparing quantities and representing that relationship using less than, greater than, between (e.g., intervals), and closer to [E3].
  • Collecting and organizing information in a data table [E6].
  • Reading a table to solve problems about a data set [E8].
  • Explaining your thinking [MPE5].

Daily Practice and Problems G–H

G. Subtraction 1

H. Math Hopper Hops

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Book

 Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Student Groups

30 connecting cubes

Supplies for Students

calculator

Materials for the Teacher

Unit 10 Assessment Record
class number line (0–130)
one-gallon plastic storage bag, optional

Assessment in this Lesson

Assessment Expectation Assessed
Comparing Names
Student Activity Book
Pages 289–290
E1. 
Represent and identify numbers to 100 using counters, number lines, ten frames, 100 Chart, drawings, and symbols.
E2. 
Represent the partitions of two-digit quantities as tens and leftover ones.
E3. 
Compare quantities and represent that relationship using less than, greater than, between (e.g., intervals), and closer to.

Vocabulary in this Lesson