Teaching elapsed time is a SC 4th grade standard and at times a not so easy one to teach. Here is an activity I implemented this past week in small groups to help my students with this skill. It’s similar to my Pumpkin Poke freebie that you may or may not have downloaded.
First, I printed out these cards, laminated, and hole-punched underneath each answer (ok, I lie. A helpful parent did all of that :P.)
In small groups, I explained this objective to my students and that in order to do this, they need to either calculate 9 + ? = 60 or 60 – ? = 0. I encouraged those who were struggling to use to use the counting up method: 9 + ? = 10 (answer – 1) and 10 + ? = 60 (answer – 50). Add the two answers together to achieve the final answer – 51.
Once students got the hang of it, they continued to grab cards, showing me the back of the card for me to check for accuracy and so forth. If students answered incorrectly, I was able to help them in the moment and also make mental notes of who seemed to be having difficulty with the concept. Once all the cards were taken, the students counted how many cards they had completed. This motivated them to not only make the calculations but to work as fast as possible to win more cards. Now I will place this game in math centers for extra practice.