Cogito
Grade 2 Math · Chapter 7 · Lesson 1
Meet the Coins
Size does not tell you what a coin is worth.
10 problems · about 11 minutes · 2.MD.C.8
What this lesson teaches
The child identifies the penny, nickel, dime, and quarter and states each value.
- Penny 1¢, nickel 5¢, dime 10¢, quarter 25¢.
- Size does not tell you the value.
- One coin can stand for many pennies.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
3 problemsReview — Equal Groups in Stories: 4 plates with 3 buns each. How many buns?
Answer 12
Why 3 + 3 + 3 + 3 = 12.
Review — Filling a Rectangle With Squares: 2 rows of 5 squares. How many squares?
Answer 10
Why 2 rows of 5 is 10 squares.
Review — Writing the Equation: 3 rows of 4. What is the total?
Answer 12
Why 3 rows of 4 is 12.
Warm Up
Straightforward practice. Get the method working first.
3 problemsHow many cents is a dime worth?
Answer 10
Why A dime is 10¢.
Does a bigger coin always mean more money?
Answer No. A dime is small and worth 10¢.
Why Size has nothing to do with value.
How many cents is a quarter worth?
Answer 25
Why A quarter of a dollar.
Build It Up
The same ideas with more to keep track of.
1 problemHow many cents is a nickel worth?
Answer 5
Why Five pennies.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
3 problemsHow many pennies are worth the same as a nickel?
Answer 5
Why A nickel is 5¢.
The Piggy Bank: Which is worth more, a dime or a nickel?
Answer The dime. It is 10¢.
Why A dime is 10¢ and a nickel is 5¢.
Swapping: How many pennies are worth the same as one dime?
Answer 10 pennies
Why Ten pennies make a dime.