monday, march 10, 2014. potd a spotlight rotates 36° every four minutes. how many more degrees will...

Monday, March 10, 2014

POTD

A spotlight rotates 36° every four minutes. How many more degrees will it take to make a full rotation?

How many more rotations will it need to make?

How many more minutes will it take?

Homework Review

Guided/Independent

Guided/Independent

Tuesday, March 11, 2014

POTD

If a sprinkler rotates a total of 120 degrees, how many one-degree turns has the sprinkler made?

Explain how you know.

Homework Review

Quiz Time

Remember:To convert from larger units to smaller units,

multiply.To convert from smaller units to larger units,

divide.Self-correct….always check your work!!!

Wednesday, March 12, 2014

POTDThe minute hand on a clock rotates one-degree at each interval. If it is 10:45 how many one-degree turns has the minute made?

Homework Review

Time

The Hands of Time

There are 60 minutes on a clock face. Skip count by fives to count the minutes with me.

5

1510

25

20

3035

6055

4045

50

The Hands of Time

Count the numerals on the clock. There are only 12 hours on a clock face. So, the hour hand is a short hand.

“Minute” is a long word. The minute hand is the longer hand.

“Hour” is a short word. The hour hand is the shorter hand.

hour

When the minute hand is pointing to 12, read the time as “o’clock”. In this case, the hour hand is pointing to the 3 and it is “three o’clock”.

Four Quarters

• If we were to slice the clock into 4 equal sections, we would have 4 QUARTERS. Each quarter would represent a 15 minute section.

A Quarter After

• When the minute hand is pointing to the numeral 3, we say that the time is “A quarter after/past _____.” Here, the clock shows a quarter past seven, or 7:15.

A Quarter Til/To

• When the minute hand is pointing to the numeral 9, we say that the time is “A quarter til/to _____.” Here, the clock shows a quarter to five, or 4:45.

Half Past

• When the minute hand is pointing to the numeral 6, we say that the time is “Half past _____.” Here, the clock shows half past 2, or 2:30. Notice how the hour hand is half-way in between the 2 and the 3.

AM/PM

• 12:00 AM is MIDNIGHT (We are sleeping)• 12:00 PM is NOON (lunchtime)• When we say AM, we are referring to the

hours before NOON.• When we say PM, we are referring to the

hours past NOON.

Important Facts About Time

• 60 seconds= 1 minute• 60 minutes= 1 hour• 24 hours= 1 day• 30 minutes= 1 half hour• 15 minutes= 1 quarter hour

Guided/Independent

Thursday, March 13, 2014

POTD

A sprinkler rotates 45° every 30 seconds. How many rotations will the sprinkler make? How long will it take the sprinkler to make a complete rotation?

Homework Review

Elapsed Time

Finding Elapsed Time

Given a starting time and an ending time, find out how much time was spent (elapsed time).

Given a start time and the amount of time spent, tell the finishing time.

Given an ending time and the amount of time spent, tell the starting time.

Step 1

Count the Hours

For example: 7:10 – 10:55

Step 1

Count the Hours

For example: 7:10 – 10:55

3 hours

Step 2

Count the Minutes

For example: 7:10 – 10:55

Step 2

Count the Minutes

For example: 7:10 – 10:5545 minutes

Step 3

Write the elapsed time

3 hours and 45 minutes

Mountain Number Line Strategy

EX: Joey was dropped off at the movie theater at 4:40 pm. His mom picked him up at 7:37pm. How long was Joey at the movie theater?

Add the total time.

EX: How long is the movie?

• I started watching a movie at 3:30 pm and it ended at 4:45 pm.

EX: How much time is there between school and bedtime?

• How much time is there between the time school is out (3:40 pm) and bedtime (8:15 pm)?

Find the Ending Time

• What time is 4 hours and 30 minutes from 6:55?

Find the Start Time

• What time did we start on our trip if we arrived at 8:17 and it took 3 hours and 10 minutes?

Find the Start Time

• What time do I need to wake up if I have to be at school at 8:15 am and it takes me 1 hour and 45 minutes to get ready?

Guided/Independent

Additional Practice

Friday, March 14, 2014

POTD

What is the measurement of each fraction if the entire circle is 360 degrees?

Homework Review

Use a number line to figure out the elapsed time between the following pairs of times:

1. 1:00 to 4:30

2. 2:27 to 2:57

#1

Jonas left home at 10:15 a.m. to head to the pool. He arrived at 10:37a.m. • How long was his ride?

Elapsed Time Practice

#2

At 4:33 Shelly left the grocery store. She spent 1 hour and 16 minutes shopping.

What time did she arrive at the store?

Elapsed Time Practice

# 3

• Devin jogged with his dog from 1:14 p.m. to 3:03 p.m. He stopped for a 15 minute break. How long did he spend jogging?

Elapsed Time Practice

#4

• Oprah and Gayle left Chicago at 8:00 a.m. and arrived in Cleveland at 11:43 a.m.

• They stopped for lunch and were back on the road at 1:15 p.m.

• They arrived in Erie, PA at 9:16 p.m.• How much time did they spend driving?• How long was their lunch break?

Elapsed Time Practice

#5

• The prom decorating committee arrived at the high school at 4:30 to set up. The prom started at 7:30p.m. and ended at 1:00 a.m. The decorating committee left when the prom ended.

• How much time did the committee members spend at the school on prom night?

• What information in this problem is not needed?

Elapsed Time Practice

Guided/Independent

Guided/Independent

1) Sheila spent 4 hours working on a craft project. She started at 12:30 P.M. What time did she finish? Start ___________ End ______________ Elapsed ______________ 2) The mom ran errands for one hour and 45 minutes. If she left at 2:15 P.M., what time did she return?Start ___________ End ______________ Elapsed ______________ 3) Julia worked on her chores from 3:15 P.M. until 4:00 P.M. How long did she work? Start ___________ End ______________ Elapsed ______________ 4) The baseball game started at 7:05. It ended at 9:15. How long was the baseball game?Start ___________ End ______________ Elapsed ______________ 5) The Smiths went to dinner at 5:45 P.M. and returned home at 7:30 P.M. How long were they gone?Start ___________ End ______________ Elapsed ______________ 6) Maggie took a walk. She left at 10:30 A.M. and got home at 1:45 P.M. How long was she gone?Start ___________ End ______________ Elapsed ______________ 7) The school carnival began at 10:00 A.M. and ended at 1:45 P.M. How long was the carnival?Start ___________ End ______________ Elapsed ______________ 8) The turkey needs to cook for 5 hours and 30 minutes. If it is put in the oven at 1:00 P.M., what time does it need to come out of the oven?Start ___________ End ______________ Elapsed ______________ 9) Paul ran a half marathon in one hour and 50 minutes. If he started running at 7:30 A.M., what time did he finish?Start ___________ End ______________ Elapsed ______________ 10) Abby took a nap from 12:30 P.M. until 3:00 P.M. How long was her nap?Start ___________ End ______________ Elapsed ______________

Friday HomeworkRecord the times for 5 different activities this weekend in the provided chart and find the elapsed time.

Activity Start Time Elapsed Time End Time

Went to bed Friday Night (start)…Woke up on Saturday Morning (end)

Write a 5 sentence summary of your weekend activities.

Workshop Quiz

Am I missing the start time, end time, or elapsed time?

Check the hour hand…did I record the correct hour?

As always….Did I self-correct?