Unit 1.5: Time

Big Idea: Some attributes of objects are measurable and can be quantified by counting iterated units.

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Unless otherwise noted, SFUSD Math Core Curriculum is licensed under the Creative Commons Attribution 4.0 International License

Teacher-facing pages are green

Student-facing pages are white

notes for teachers are in the speaker notes

Suggested Lesson Sequence April 26 - May 7 (1-2 weeks)

Time Warm Up and KWL

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Lesson 1:LS2 Day 1 Seesaw Lesson 1 Spanish - Time Hour Hand

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Lesson 2:LS2 Day 2 Seesaw Lesson 2 Spanish - Time Half Hour Hand

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Lesson 3: Expert Task Seesaw Lesson 3 Spanish - Time Match

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Synchronous and Asynchronous Teaching Options:

Use a combination of Synchronous and Asynchronous approaches

Additional Unit Resources

Telling Time Games - A collection of games to help students tell time to the hour, half-hour, and in 5-minute increments. The games include both analog and digital clocks.

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Time Travel - A game that gives students practice telling time to the hour and minute. Includes a.m. and p.m.

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Stop the Clock- Easier - Students match analog and digital clocks that tell time to the nearest 15 minutes.

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Stop the Clock- Harder - Students match analog and digital clocks that tell time to the nearest 5 minutes.

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On Time - Students move the hands of a clock to set it at a given time. Includes corrections when students are wrong. 4 levels.

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Puzzle Pics Clocks - Tell time to the nearest 5 minutes to solve a picture puzzle.

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I Spy Time - Students listen to the time and identify it on a digital clock to advance along a path.

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Desmos activities

• Polygraph: Clocks: Helps students develop an understanding for the need for a common language to describe time and to surface early ideas about that language.
• Talking Time: Helps students understand different ways that people talk about time. They will read different descriptions of time – for example 5:15 or 15 after 5 or quarter after 5 – and try to set a clock to that time.

Using the Math Clock

• The Math Learning Center’s Math Clock is very useful for this unit.
• We recommend watching this video for a quick overview of how to use all its features: Clock Math Learning Center App
• The Math Clock can be used by the teacher for demonstrations during the Launch or Summarize portions of the lesson, or for Skip Counting Routines.
• The Math Clock can be used by students for the explore portion of the lesson. Students can share their work with the teacher by using the “share” feature, indicated by this icon →

at the bottom right of the screen and saving the image, copying the image, sharing the link, or sharing the code.

Counting on a Clock

Math Clock

Skip counting on a Clock is an option for grades 2 and up that supports students with

• telling time
• measuring elapsed time time
• skip counting, and
• multiplication

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This video explains how to do this using the Math Clock app.

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• This routine can be done with a clock with movable hands, or on the Math Learning Center’s Math Clock.
• We recommend watching this video for a quick overview of how to use all its features: Clock Math Learning Center App

Sample Counting on a Clock Routines

Math Clock

Counting by minutes:

• This video shows how to Count Forward by Minutes

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Skip counting by 5:

Start at 12 and count forward:

• 12:00, 12:05, 12:10, 12:15, etc. When you get to 1:00 stop and point out that 60 minutes = 1 hour.
• Continue as time and interest allow
• Have kids do movement along with the counting for variety and increased kinesthetic learning.

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Skip counting by 10.

Start at 12 and count forward:

• 12:00, 12:10, 12:20, 12:30, etc. When you get to 1:00 stop and point out that 60 minutes = 1 hour.

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Skip counting backwards on the clock.

Start at 12 and count backward by 5s and then 10s:

• 12:00, 11:55 11:50, 11:45, etc.
• 12:00, 11:50 11:40, 11:30, etc.

Daily Schedule

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Description: In Grade 1, students learned to tell and write time in hours and half hours. The Daily Schedule will help students see how the events of the day align with these times. The Daily Schedule should be proportional, so that students begin to notice that the length of time spent on an activity can be seen on the schedule.

Objective: To provide opportunities for students to develop their sense of time. This important routine has helped build students’ sense of time and clock literacy since the beginning of the year

Half Hour Schedule BLM .S. .C

Daily Schedule Activity Cards BLM .S. .C

Routine: Review the sequence of activities of the day and the time each one starts.

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Math Talks:

Clock Talks

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Whole Class or Groups:

Description: These Math Talks are designed to encourage students to reason about time and apply their understanding of how the hours are sequenced and positioned on a clock. These clock talks proceed in order of increasing difficulty. Gauge your students’ interest and skill in order to decide how fast to move through them.

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Images are available to screen shot in the Math Talks Clocks BLM. Optionally, use an instructional clock or create your own clock talks from the Interactive Clock Face or No Numbers Interactive Clock Face.

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• Objective: Students apply their knowledge of analog clocks to tell time to the nearest hour and half hour.

Share your screen and annotate the Math Talk using the Zoom Annotation tool as students share their thinking

What time is it? How do you know?

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Math Talks:Engage with Current Content

Clock Talks

Objective: To apply knowledge of analog clocks to tell time to the half hour.

Description: These math talks are designed to help students to reason about time, especially how the position of the hour hand can help them approximate how close it is to the hour or half hour.

Suggested Math Talks:

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Question: About what time is it? How do you know?

¿Que hora es? ¿Como sabes?

Calentamiento: Medir el tiempo

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¿Que hora es?

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¿Como lo sabes??

¿Que son algunas maneras que puedes leer el tiempo?

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¿Por qué es importante leer el tiempo?

¿Cuando es necesario saber el tiempo?

¿Cuando necesitas saber cuanto tiempo va a tomar algo?

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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¿Que hora es?

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¿Como lo sabes??

¿Que son algunas maneras que puedes leer el tiempo?

reloj analogo

reloj digital

reloj de mano

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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¿Que ya sabes sobre el reloj?

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Lesson 1: LS2 Day 1

Whole Class or Groups: Math Talk - What time is it? How do you know?

• Telling Time video
• Introduce the hour hand and the language o’clock
• Skip count around the clock in 60 min. increments on the Geared Clock with the Math-Clock

Independent or Small Group: Seesaw Lesson 1 Spanish - Time Hour Hand

• What time is it?
• How do you know?

• Students connect the position of the hour hand to the approximate time and learn how to write the hour.

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Whole Class or Groups: Summary- We can tell time to the hour

• Discuss what happens when the hour hand is in between numbers

Core Math to Emphasize

• Time can be measured in increments of one hour. The hour hand takes one hour to travel from one number to the next on an analog clock.

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Normas matemáticas

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Los errores son regalos que promueven el debate.

Las respuestas son importantes pero no representan las Matemáticas.

Hablemos de lo que cada uno piensa.

Haz preguntas hasta que las ideas tengan sentido.

Haz uso de múltiples estrategias y múltiples representaciones.

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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Charla matematica

¿Que hora es? ¿Como lo sabes?

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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Mano de minuto

Mano de la hora

3 en punto.

3:00

Vamos a contar...

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¿Que hora es? ¿Como lo sabes?

Yo se que es…

porque...

Leer el tiempo

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Sabemos leer el reloj a la hora en punto.

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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Lesson 1: LS2 Day 2

Whole Class or Groups: Math Talk - What time is it? How do you know?

• Introduce the minute hand and the language ___thirty
• Skip count around the clock in 30 min. increments on the Geared Clock with the Math-Clock

Independent or Small Group: Seesaw Lesson 2 Spanish - Time Half Hour Hand

• What time is it?
• How do you know?

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• Students learn about the minute hand on their clocks and practice saying hour and half hour.

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Whole Class or Groups: Summary - We can tell time too the ½ hour

• Remind students that when the arrow is pointing to the 12, we say o’clock and we write it __:00. Tell students that when the arrow is halfway around the clock, pointing to the 6, we say ___ thirty and write it ___:30.

Core Math to Emphasize

• Time can be measured in increments of one hour. The hour and minute hands travel at different speeds and together help us to tell time.

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Normas matemáticas

28

Los errores son regalos que promueven el debate.

Las respuestas son importantes pero no representan las Matemáticas.

Hablemos de lo que cada uno piensa.

Haz preguntas hasta que las ideas tengan sentido.

Haz uso de múltiples estrategias y múltiples representaciones.

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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Charla matematica

¿Que hora es? ¿Como lo sabes?

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Mano de minuto

Mano de hora

3:30

3 y media.

Vamos a contar

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¿Que hora es? ¿Como lo sabes?

Yo se que es…

porque...

Leer el tiempo

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Sabemos leer el reloj a la hora y media.

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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Lesson 3: Expert Task

Whole Class or Groups: Math Talk - What time is it? How do you know?

• Remind students about what they’ve learned about time
• Tell students that today they are going to get a set of cards and their job is to match the cards that show the same time.

Independent or Small Group: Seesaw Lesson 3 Spanish - Time Match, Time Match to the Hour and Half Hour BLM .S. .C.

• Draw a line matching the time on the clock with the correct written or digital time below
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• Students match analog and digital clock cards representing the hour and half hour.

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Whole Class or Groups: Summary True or False?

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Core Math to Emphasize

• Time can be measured in increments of one hour. Analog and digital clocks provide different representations of the same time.

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Normas matemáticas

37

Los errores son regalos que promueven el debate.

Las respuestas son importantes pero no representan las Matemáticas.

Hablemos de lo que cada uno piensa.

Haz preguntas hasta que las ideas tengan sentido.

Haz uso de múltiples estrategias y múltiples representaciones.

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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Charla matematica

¿Que hora es? ¿Como lo sabes?

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Mano del minuto

Mano de la hora

3:00

3 en punto.

Minute Hand

Hour Hand

3:30

3 y media.

Leer el tiempo

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Sabemos leer el reloj a la hora en punto.

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Sabemos leer el reloj a la hora y media.

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SAN FRANCISCO UNIFIED SCHOOL DISTRICT

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¿Verdadero o falso?

¿Verdadero o falso?