Telling Time Using Multiples of 5
The students will start by filling out a KWL chart about clocks and time to find out what prior knowledge the students have. After the students complete their charts the teacher will guide a group discussion with the class to get the students thinking in the right direction. The teacher will want to try to get the students to relate their knowledge of clocks to the concept of multiplicating by 5. Questions may include:
- What types of things are clocks used for?
- Where are clocks in your home that you use?
- Can anyone show me the which hand is the minute hand?
- How many numbers are there on a clock?
- How many minutes are there in an hour?
- Does anyone know how many minutes past the hour go by at number 3? at 5?
- How many minutes are in half of an hour?
2 Direct Instruction
Students will now use unit blocks that they will group together in 5's and then group together by 5’s. By now using a manipulative after the enagaging discussion students will have a concrete model of multiplying by 5's. They will make at least ten groupings and write down their groupings in a mathematical equation on paper to demonstrate understanding.
3 Guided Practice
- Students now will be introduced to the correlation of counting in 5’s on a clock and telling time.
- Explain to students that it takes the minute hand exactly 5 minutes to reach each number on the clock, therefore every number is a “group” of 5, just like in their direct instruction they did with the unit blocks.
- After the students recognize the pattern of 5’s, explain that if they multiply the number the minute hand lands on by 5, they will get know how many minutes past the hour it is.
- Give each student a paper clock, and demonstrate on the teacher clock how many minutes past the hour each student should set his or her clock.
- Ask the student to write down silently how many minutes past the hour it is in the form of a mathematical equation, as well as how they derived their answer. Do this at least 5 times.
- Finally, ask the students to write down any patterns they noticed, if any, when writing out problems and finding their answers.
4 Independent Practice
Students will now use what they learned to complete challenges on the app Todo Telling Time. Specifically the games that involve telling time in incrimants of 5, minutes, and counting by 5's. There are several games with 3 levels for students to complete Todo has a progress tracker as well as an assesment activity after the student is done.
Students will take a worksheet home that have clocks with set times on them. Students will be asked to answer how many minutes are past the hour in the form of a multipliaction problem. ie: clock says 3:15 answer: 3x5= 15 minutes past the hour.