130 likes | 267 Views
Problem Solving with Time. Skip counting and number lines. The objective for today is to:. I can tell what time it is and how much time has passed by using a number line or by skip counting. Vocab Kickboxing!.
E N D
Problem Solving with Time Skip counting and number lines
The objective for today is to: • I can tell what time it is and how much time has passed by using a number line or by skip counting.
Vocab Kickboxing! Skip counting= counting ahead or backwards by the same number2 Special Rules: ou & ingOther consonants: 6Other vowels: 1 Number line= line with even distance between each data point2 Special Rules: er& silent eOther consonants: 5Other vowels:2
Review skip counting • Skip count by 5! 0, 5, 10, 15…. • Skip count by 10!0, 10, 20, 30… • Skip count by 15!0, 15, 30… • How does skip counting by 5, 10, or 15 make it easier for us to tell time?
Practice with a word problem! • Christine has 12 math problems for homework. It takes her 5 minutes to complete each problem. How many minutes does it take Christine to finish all 12 problems? • Hint: Use a multiplication strategy! 12 x 5 = 60 It takes Christine 60 minutes to finish all 12 problems. 5 5 5 5 5 5 5 5 5 5 5 5
Practice with a word problem! • Use your ruler to draw a 12 cm number line. • How many 5 minute intervals will the number line need to represent a total of 60 minutes? • How can we make sure our intervals are evenly spaced? • Draw your number line!
Practice with a word problem! • How many minutes are labeled on our number line? • We start math at 10:00 and end at 11:00 today. Where would I put the 10 and 11 o’clock on our number line? • If we start centers at 10:25, where would that be on our number line? • If the first rotation only lasts 15 minutes, where would that be on our number line? What time would that represent? • How many more centers could we do before math time is over? 15 15 10 10 10 20 25 15 5 5 5 10:00 11:00 10:25 10:40
Your turn! • Practice page 2.A.21-22 • Exit ticket