Mathematics Math Expressions Lesson Grade 2

Mathematics Math Expressions Lesson
Grade 2 Quarter 2 Day 77
Common Core State Standard(s)
2.MD.7 Tell and write time from analog
and digital clocks to the nearest five
minutes, using a.m. and p.m.
Standards for Mathematical Practice
Standard 2: Reason abstractly and
quantitatively.
Standard 3: Construct viable arguments and
critique the reasoning of
others.
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Materials Needed:
Math Expressions Volume 1
o TE pages 453- 458
o Blackline Master “5 Minute
Intervals Practice”
o Blackline Master “Read and
Show Time to 5 Minutes
Practice”
Student MathBoards
Demonstration clock or Time Poster
Sticky notes
Assessment
Ask children to draw an analog clock on
their MathBoards and to include numbers
from 1 to 12. Have them write the number
of minutes after the hour in 5-minute
intervals around the outside of the clock.
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Math Expressions Lesson
Unit 6 Lesson 2: Hours and Minutes
Activity 1
1. Using TE 454, have students do different activities for one
minute to help them develop a sense of the duration of 1
minute.
2. Lead a discussion on how long 1 minute feels and compare it
with the timeframe of 1 hour.
3. Display 1 o’clock on a demonstration clock or on the Time
Poster. If students have their handmade clocks from lesson 1,
have them follow along as you lead them through the
discussion questions on TE page 454.
4. Discuss the differences between analog clocks and digital
clocks as noted on the bottom of TE page 454.
5. Refer to Transparency “5 Minute Intervals Practice” as you
explain that small numbers around the outside of the clock
face tell the number of minutes after the hour.
6. Use the discussion questions on TE page 455 to talk about the
interval of minutes between each number on the clock face.
7. The Alternate Approach on TE page 455 will help students to
see the 5-minute intervals by labeling them with sticky notes.
Activity 2
1. On TE page 456, use Math Talk to discuss reading time to 5
minutes. Use the discussion questions on this page to talk
about the minute hand and the hour hand.
2. Have the students complete Blackline Master “Read and Show
Time to 5 Minutes Practice” as you circulate the room and
monitor their understanding.
3. Use the Teacher Note on TE page 456 to clarify that when the
hour hand is between two numbers, the hour is always the
smaller number. Remind students about the direction in which
the clock hand travels is the same direction as the numbers on
the clock increase.
Additional Teacher Notes: Refer to the Teaching Note on TE
page 456 to clarify misunderstandings of reading time on an
analog clock.
Homework
Blackline Master – “Read and Show
Time to 5 Minutes” Homework”
Vocabulary
5 minute interval- the amount of time that
passes and is shown between numbers on an
analog clock.
Analog clock
Digital clock
Hour hand
Minute hand
Wake County Public School System, 2014
Note: Refer to Teacher Edition pages for additional
support with Math Talk, Math Background, English
Language Learners, Differentiated Instruction, etc.
Source: Houghton Mifflin Harcourt Math Expressions
Transparency Grade 2
Day 77
Standard(s) 2.MD.7
5-Minute Intervals Practice
1. Count by 5’s around the clock.
Wake County Public School System, 2014
Blackline Master Grade 2
Day 77
Standard(s) 2.MD.7
Read and Show Time to 5 Minutes Practice
Directions: Write the time on the digital clocks.
__:__
__:__
__:__
__:__
__:__
__:__
Directions: Draw hands on the analog clocks to show the time.
7 : 35
9 : 05
4 : 45
2 : 10
10 : 25
8 : 55
Wake County Public School System, 2014
Blackline Master Grade 2
Day 77
Standard(s) 2.MD.7
Read and Show Time to 5 Minutes Homework
Directions: Write the time on the digital clocks.
__:__
__:__
__:__
Directions: Draw hands on the analog clocks to show the time.
2 : 35
7 : 05
1 : 45
Directions: Fill in the answers when counting by 5’s.
1.) 9 fives = __45__
2.) 2 fives = ______
3.) 5 fives = ______
4.) 1 five = ______
5.) 8 fives = ______
6.) 4 fives = ______
Directions: On the back, draw a picture of what you would be doing at 4:00 in
the afternoon on a school day. Draw an analog clock to show the time.
Wake County Public School System, 2014
Answer Key Grade 2
Day 77
Standard(s) 2.MD.7
5-Minute Intervals Practice (Answer Key)
1. Count by 5’s around the clock.
60
55
05
10
50
15
45
40
20
35
25
30
Wake County Public School System, 2014
Answer Key Grade 2
Day 77
Standard(s) 2.MD.7
Read and Show Time to 5 Minutes Practice (Answer Key)
Directions: Write the time on the digital clocks.
9:00
5:15
1:30
8:30
9:05
10:10
Directions: Draw hands on the analog clocks to show the time.
7 : 35
9 : 05
4 : 45
2 : 10
10 : 25
8 : 55
Wake County Public School System, 2014
Answer Key Grade 2
Day 77
Standard(s) 2.MD.7
Read and Show Time to 5 Minutes Homework (Answer Key)
Directions: Write the time on the digital clocks.
1:25
5:05
2:30
Directions: Draw hands on the analog clocks to show the time.
2 : 35
7 : 05
1 : 45
Directions: Fill in the answers when counting by 5’s.
1.) 9 fives = __45__
2.) 2 fives = 10
3.) 5 fives = 25
4.) 1 five = 5
5.) 8 fives = 40
6.) 4 fives = 20
Directions: On the back, draw a picture of what you would be doing at 4:00 in
the afternoon on a school day. Draw an analog clock to show the time.
Wake County Public School System, 2014