1. 573A Chapter 10
About the Math
Professional Development
LESSON AT A GLANCE
Interactive Student Edition
Personal Math Trainer
Math on the Spot
Animated Math Models
iTools: Measurement
iTools: Number Lines
HMH Mega Math
Professional Development Videos
MP4 Model with mathematics.
Using models to explore mathematical concepts provides
students with a foundation for understanding. Models,
such as number lines, allow students to learn new
concepts using a familiar tool.
Students have already used number lines to model
addition, subtraction, multiplication, and division. In this
lesson, students use this familiar tool and addition to
find elapsed times of everyday events. In future lessons,
students will use the number line to add and subtract to
find starting times and ending times.
Measure Time Intervals
LESSON 10.3
Learning Objective
Use a number line or an analog clock to
measure time intervals in minutes.
Language Objective
Students explain to a partner and give examples
of how you can measure elapsed time in
minutes.
Materials
MathBoard
F C R Focus:
Common Core State Standards
3.MD.A.1 Tell and write time to the nearest minute and measure time
intervals in minutes. Solve word problems involving addition and
subtration of time intervals in minutes, e.g., by representing the problem on a number
line diagram.
MATHEMATICAL PRACTICES
MP1 Make sense of problems and persevere in solving them. MP3 Construct viable arguments
and critique the reasoning of others. MP4 Model with mathematics. MP8 Look for and express
regularity in repeated reasoning.
F C R Coherence:
Standards Across the Grades
Before
2.MD.C.7
Grade 3
3.MD.A.1
After
4.MD.A.2
F C R Rigor:
Level 1: Understand Concepts....................Share and Show ( Checked Items)
Level 2: Procedural Skills and Fluency.......On Your Own
Level 3: Applications..................................Think Smarter and Go Deeper
F C R For more about how GO Math! fosters Coherence
within the Content Standards and Mathematical Progressions
for this chapter, see page 559J.
FOCUS COHERENCE RIGOR
2. ENGAGE
1
Lesson 10.3 573B
Daily Routines
Common Core
How can you
measure elapsed time
in minutes?
Vocabulary Builder
Materials Semantic Map (see eTeacher Resources)
Elapsed Time Have students use semantic
mapping to understand the meaning and
uses of the term tiempo transcurrido. Have
students list words or phrases that are
related to the term.
Problem of the Day 10.3
Un total de 962 estudiantes asisten
a la escuela primaria Elm Street. A la
escuela primaria Maple Street asisten
849 estudiantes. ¿Cuántos estudiantes más
asisten a la escuela Elm Street que a la
escuela Maple Street?
?
Vocabulary tiempo transcurrido
™Interactive Student Edition
™Multimedia Glossary
e
with the Interactive Student Edition
Essential Question
¿Cómo puedes medir el tiempo transcurrido en minutos?
Making Connections
Invite students to tell you what they know about analog clocks.
¿Qué manecilla muestra los minutos? la manecilla larga ¿Y las horas?
la manecilla corta ¿Cuántos minutos hay en 1 hora? 60
Learning Activity
What is the problem the students are trying to solve? Connect the
story to the problem.
• ¿Qué quiere saber Lucía? cuánto tiempo se detuvieron los viajeros
para la merienda de campo
• ¿A qué hora llegaron los viajeros? 12:15
• ¿Qué hora es ahora? 12:47
• ¿Pasó más o menos de una hora? menos
Literacy and Mathematics
Choose one or more of the following activities.
• Write the word elapsed on the board. Ask students to define the
word and use it in their own original sentence.
• Ask students to draw a basket and draw what foods they would
bring for a picnic.
• Have students write a list of activities and have them come up
with start times and end times of the activities. Then have the
students trade papers and find the elapsed times of the activities.
113