Unit Plan 27 (Grade 1 Math): Time to the Half Hour

Focus: Tell and write time to the half hour on analog and digital clocks; interpret minute hand at 6 (:30) and hour hand between numbers; model schedules and simple durations.

Grade Level: 1

Subject Area: Mathematics (Measurement & Data)

Total Unit Duration: 5 sessions (one week), 45–60 minutes per session

I. Introduction

Students connect daily routines to time by reading and writing half-hour times. They learn that the minute hand at 6 shows :30, while the hour hand sits between numbers because the hour is half passed. Learners match analog and digital times and use simple timelines/number lines to represent start, end, and how long in half-hour chunks.

Essential Questions

• How do the hour hand and minute hand work together to show :30?
• Why is the hour hand between numbers at the half hour?
• How can a schedule/number line help me model and explain time?

II. Objectives and Standards

Learning Objectives — Students will be able to:

1. Tell and write time to the nearest half hour on analog and digital clocks.
2. Explain that minute hand at 6 means :30 and the hour hand is between hours.
3. Match/translate between analog and digital representations for times like 7:30, 1:30, 12:30.
4. Model simple daily schedules and durations (half-hour chunks) using timelines/number lines and pictures.
5. Justify time readings using clock features, labels, and complete statements (MP.4).

Standards Alignment — CCSS Grade 1 (threaded across the unit)

• 1.MD.3: Tell and write time in hours and half-hours using analog and digital clocks.
• Mathematical Practices: MP.4 emphasized (model with mathematics); MP.6 (precision) and MP.3 (explain/critique) threaded.

Success Criteria — Student Language

• I can read :30 by seeing the minute hand at 6 and the hour hand between numbers.
• I can write the digital time that matches the analog clock (e.g., “It is 3:30.”).
• I can model a short schedule and tell how long something lasts in half hours.