Main Subject Area: Mathematics
After learning how many coins a new press can strike in a minute, students calculate the number of new coins that can be made in a single day. Students then share their problem-solving strategies with the class, using them to make additional calculations.
Additional Subject Area Standard(s):
To achieve the standard of whole number computation, students will construct number meanings through real-world experience and the use of physical materials; understand our numeration system by relating counting, grouping, and place value concepts; interpret the multiple uses of numbers encountered in the real world; model, explain, and develop reasonable proficiency with basic facts and algorithms; use a variety of mental computation and estimation techniques; use calculators in appropriate computational situations; and select and use computation techniques appropriate to specific problems and determine whether the results are reasonable.
Paper and pencils. Manipulatives and calculators, as needed.
Coins Used in Lesson:
1. Share the following fun fact with students: A brand new press can strike 700 coins in one minute.
2. Ask students to determine how many coins could be struck in one hour.
3. As a class, have students discuss the strategies they used to figure out the number of coins made in an hour.
4. Then ask students to determine how many coins could be struck in a single day if four new presses were used. Continue the problem for more advanced students: How many coins could these new presses make in a week? How many coins could be made in a week with eight new presses?
Assessment / Evaluation:
Were the students able to determine how many coins could be struck? Could they successfully explain their problem-solving strategies?
Differentiated Learning Options:
Have students calculate the total dollar amount of coins struck in a single day by new coin presses (cent, nickel, dime, quarter, half-dollar, and/or dollar). Then have then compare the figures - for example, how much more money can a new dollar coin press make in a single day than a new cent press?