Mathematical Practice(S ): 1 Make Sense of Problems and Persevere, 4 Modeling, 6 Attend

Lesson Standard: 3.MD.1 Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.

Content Objective: Students will come to understand when to use A.M. or P.M. when telling time to the nearest minute.

Mathematical practice(s): 1 Make sense of problems and persevere, 4 Modeling, 6 Attend to precision

Lesson Design / What will the teacher be doing? / What will the students be doing?
(Structured Student Interaction) / What will the teacher be listening for?
(What do we expect students to say?) / Probing Questions for Differentiation
Assessing Questions
(“stuck”) / Advancing Questions
(further learning)
Engage (Launch)
Late for School story from the Grab and Go / Reading the story to class
Use clock to show time in the story or place the book on the Elmo to show the clock / Listening to story and respond to questions from story on white boards / Raise hand/gesture when they hear a time word in the story. / Why do you think that?(If student has P.M. instead of A.M.)
Repeat for clarification / What do you notice about all these events?
Activity or Task 1
List sample activities from Engage in Lesson 10:2
Which activities do you do in the morning, afternoon, evening? / List activities on board
Breakfast
Dinner
Get ready for bed
Soccer practice
Recess
Brushing teeth
Sleeping
Teacher poses the times listed under Activity 2
Stand up/sit down to show : A.M P.M
Lead whole class debrief of categorization to highlight
A.M./P.M. and activities that may fall into both. / Make a T chart on white board: A.M P.M / Watch categorizing on white boards / Is A.M always light?
P.M. dark?
What are other names for 12:00?
Where is 12:00 on this number line?
Activity or Task 2
Telling time with clocks
9:15 in the morning
Quarter past 9 in the morning
Half past one in the afternoon
Quarter till three in the mornings
18 minutes before noon
Half hour past midnight / Teacher has students pair up and give each other times to show on the clock. / Students show time on
Individual clocks.
Pairs take turns naming a time and then partner shows time.
Activity or Task 3
Real world unlock the problem on page 396. Lea and her father arrived at the scenic overlook 15 minutes before noon and left 12 minutes after noon. Using A.M. or P.M write the time when Lea and her father arrived at the scenic overlook and the time when they left. / Teacher hands out problem or students paste it in math journal. / Studentsindividually complete problem.
Closure

Lea and her father arrived at the park 15 minutes before noon and left 23 minutes after noon.Write the time when Lea and her father arrived at the park and the time when they left. Be sure to include A.M. or P.M. with each time.