**AP Physics 1: Circuits Mistakes Whiteboarding**

I forgot to take a picture, but students did some mistakes whiteboarding with yesterday’s problems. We moved quickly enough through circuits that I think I’ll need to make sure I have some circuit materials worked into our review, but students are feeling pretty good about this topic.

**Physics: Spring Lab Practical**

Students finished up a lab practical finding an unknown mass using both Hooke’s Law and the period on a spring. Students who didn’t include units in their work tended to get two different answers; most groups got a spring constant in N/cm and without units in the calculations, they tended to miss the need to convert. It was a good lesson in the value of units. It also occurred to me I should incorporate this lab into my AP review since students are finding both gravitational mass and inertial mass.

**Chemistry Essentials: Balancing Mistakes**

We did mistakes whiteboarding with yesterday’s balancing problems. Right now, students mostly seem to be understanding what to do, but need to build up some confidence. I’m really pleased with how well the Mathlink cubes have been working as a manipulative; they are even helping students quite a bit with going between formulas and particle diagrams.

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