How Many Pennies?
Main Subject Area: Mathematics
Additional Subjects: Language Arts
Duration of Lesson: 30 minutes
Additional Subject Area Standard(s):
Students will estimate based on a penny as being a standard unit.
Students will record and test their estimates.
For each group of 3 – 4 students:
20 – 30 pennies
Sheets of papers with large outlines of different shapes (circle, triangle, square, rectangle, etc)
Coins Used in Lesson:
Grade Level(s): K-2
2. Break your students into 3 or 4 and give each group a set of supplies. Each group needs a set of pennies and one copy of the papers with the outlines of different shapes. There should be one paper for each student.
3. In their math journals, have your students write the name or draw a picture of their shape (in the first column) followed by their estimate of how many pennies they think it will take to fill up each of the shapes (column 2). Students can look at the pennies and the shapes to help decide how many they think might fill each shape.
4. Each student should create an estimate for each shape, and then the students should compare their estimates. Each group can discuss how they arrived at their estimates, and if any of the estimates seem far off.
5. Next, each student can take one of the shape outlines. One at a time they can see how many pennies will fill each shape. Each person in the group can record the actual amount in their math journals.
6. Together the class can discuss the results. Students can share how they came up with their estimations.
Assessment / Evaluation:
Differentiated Learning Options:
Students can create their own outlines of shapes and other objects to test with their groups.