The purpose of this Warm-up is to elicit students’ knowledge about 1 year as a measure of time and the ways it can be represented. The reasoning and conversations here will be helpful as students solve problems that involve time in years later in the lesson.
Launch
Display: “1 year”
“What do you know about 1 year?”
1 minute: quiet think time
Teacher Instructions
Record responses.
Student Task
What do you know about 1 year?
Sample Response
Sample responses:
It is 365 days long.
It is 12 months long.
Sometimes 1 year has an extra day.
It is the time it takes the earth to make a rotation around the sun.
Synthesis
“What does a year measure?” (time)
“What are some aspects of time that are related to a year?” (seasons, months, weeks, days)
Standards
Building Toward
4.MD.2·Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Represent measurement quantities using diagrams such as number line diagrams that feature a measurement scale.
4.MD.A.2·Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Represent measurement quantities using diagrams such as number line diagrams that feature a measurement scale.