Lesson 1

Hundreds of Coins

Est. Class Sessions: 1
X

Mathematical Standards

2.OA.A
Represent and solve problems involving addition and subtraction. (2.OA.A.1)
2.OA.B
Add and subtract within 20. (2.OA.B.2)
2.MD.C
Work with time and money. (2.MD.C.8)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP4.
Model with mathematics.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP7.
Look for and make use of structure.
MP8.
Look for and express regularity in repeated reasoning.

This ongoing project extends for the first 100 days of the school year. Within the contexts of money and the calendar, students gather and organize data and use patterns to make predictions and estimates. During this process, students solve problems that connect to many important concepts in the curriculum including grouping and counting, place value, addition, and multiplication.

Content in this Lesson

  • Using mental math strategies and reasoning strategies (e.g., using doubles, making ten) to solve addition and subtraction problems within 20 [E2].
  • Identifying the relationships between pennies, nickels, dimes, and quarters [E4].
  • Finding the value of a collection of pennies, nickels, dimes, and quarters [E5].
  • Working with multiples of 5, 10, and 25.
  • Solving problems involving money.
  • Identifying and describing patterns on 100 Charts.
  • Using a calendar to measure the passage of time.

Daily Practice and Problems A–B

A. More Than, Less Than

B. Ten Frame Flash

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Teacher Resources

 Teacher Guide - digital

Materials for the Teacher

Display of the Two Ten Frames Master (Teacher Guide)
Display of the Penny Chart, Nickel Chart, Dime Chart, and Quarter Chart Masters (Teacher Guide). See Materials
    Preparation.
Unit 1 Assessment Record
4 clear jars labeled "Penny," "Nickel," "Dime," and "Quarter"
100 pennies
20 nickels
10 dimes
4 quarters
highlighter
colored marker
a collection of coins
monthly calendar showing the first 100 days of school, optional

Materials Preparation

Enlarge Charts, Optional. Enlarge the Penny Chart, Nickel Chart, Dime Chart, and Quarter Chart Masters to display above the jars in which coins will be collected to facilitate ease of use on a daily basis. When determining a permanent place in the classroom to display the jars and posters, keep in mind easy access is needed to record totals on the charts each day and make exchanges as needed.

Assessment in this Lesson

Assessment Expectation Assessed
Hundreds of Coins
Teacher Guide - digital
E2.
Use mental math strategies and reasoning strategies (e.g., using doubles, making ten) to solve addition and subtraction problems within 20.
E4.
Identify the relationship between pennies, nickels, dimes, and quarters.
E5.
Find the value of a collection of pennies, nickels, dimes, and quarters.

Vocabulary in this Lesson