Geometry and Fractions/Money and Time
Unit description: In this unit students will learn about two-dimensional shapes, time and money. They will learn to describe and classify shapes as polygons or non-polygons. They will decompose and combine shapes to make other shapes and they analyze two-dimensional shapes to develop a foundation for understanding area, congruence, similarity, and fractions in later grades. Students will work to solve problems involving money up to $1 including counting mixed coins and making change. They will identify all coins and be able to arrange them in order from greatest to least value. Students will also be able to tell time using both analog and digital clocks to the nearest 5 minute and identify a.m. and p.m.
Download the complete Geometry and Fractions/Money and Time framework to customize for your own planning.
Essential Outcomes of the Unit
Geometry- Reason with shapes and their attributes.
- 2.G.1 Classify two-dimensional figures as polygons or non-polygons.
- 2.G.3 Partition circles and rectangles into two, three, or four equal shares. Describe the shares using the words halves, thirds, half of, a third of, etc. Describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
Measurement and Data- Work with time and money.
- 2.MD.7 Tell and write time from analog and digital clocks in five minute increments, using a.m. and p.m. Develop an understanding of common terms, such as, but not limited to, quarter past, half past, and quarter to.
- 2.MD.8a Count a mixed collection of coins whose sum is less than or equal to one dollar.
Other Standards Addressed in the Unit
Geometry- Reason with shapes and their attributes.
- 2.G.2 Partition a rectangle into rows and columns of same-size squares and count to find the total number of them
Measurement and Data- Work with time and money.
- 2.MD.8b Solve real world and mathematical problems within one dollar involving quarters, dimes, nickels, and pennies, using the ¢ (cent) symbol appropriately.
Essential Questions and Big Ideas
How do I tell time?
- Time is told in hours and minutes.
- An hour is made of 60 minutes.
- In a day there are 24 hours.
- Hours are broken into AM (morning) and PM (afternoon).
How do I count coins?
- A penny is worth 1 cent.
- A nickel is worth 5 cents
- A dime is worth 10 cents.
- A quarter is worth 25 cents.
- When counting coins, it is efficient to start with the largest value.
How do we reason with shapes and their attributes?
- Polygons are closed two-dimensional figures made of line segments.
- Shapes can be combined to make new shapes called composite shapes.
What does dividing shapes into equal shares tell us?
- Understanding equal shares helps us understand area.
- Understanding equal shares helps us understand fractions.
Download the complete Geometry and Fractions/Money and Time framework to customize for your own planning.