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  • Stefania Lambusta

    June 27, 2022 at 11:18 am

    In our first unit we introduce GCF and LCM. A textbook problem says find the LCM of 3 numbers, for example 2,3,and 5. I found this activity that I want to try with my students. It starts with a video of 3 different hour glasses. Students can notice and wonder and I can guide the thinking to when will the timers all be empty together again.