I think it was a fun activity to introduce larger numbers in multiplication. Such a simple screen- it really made it clear to understand and follow along! (pages 108 -111) Math: (30 minutes) Khan Academy: Letters and symbols in multiplication and division equations (1 video. Hard at work with Khan on their own white boards We also made a prediction about what place value our product would be- many thought hundred thousands and a few thought millions, so it was exciting for them to see it was such a huge number. By the last problem, I had the kids work on it for a minute or two, then compare their work to Khan's. I definitely paused a lot as we went through and had the kids copy the problem and how to solve onto their own whiteboards. Using columns and rows, lattice multiplication allows you to do all. We started Lattice Multiplication last week for two days, but only got as far as 3 digit times one digit, so the concept of extra rows was new. Lattice multiplication is a technique used to help students multiply multiple digits. I know people around here love Khan, but this is absolutely terrible instruction if you care at all about the meaning of multiplication, place value, and representations used in procedures. I hooked up my laptop to our projector and had kids in the meeting area with a white board, dry erase markers, and the new erasers I made (um, I cut out small squares of black fleece, but the kids love it and they do the job, so it's perfect!). This video was worse than I thought an explanation of lattice multiplication would be. Lesson 1: Multiplication intro More ways to multiply Ways to represent multiplication Math > Arithmetic (all content) > Multiplication and division > Multiplication intro Basic multiplication Google Classroom About Transcript Introduction to multiplication. Sal Khan is a clear speaker with a laid-back, but engaging, voice.it was only 7 1/2 minutes in length- perfect!.different colors on a simple black background.I had watched it the other day and loved several things about it: Parents tells kid math is hard so kid starts believing math is hard. Kid starts thinking they’re too dumb to do math. Kid believes Math is hard and approaches it as a hard subject. View a video demonstration of lattice multiplication at the Khan Academy Web. One I really enjoyed taught Lattice Multiplication. Elementary School teacher who didn’t major in math talks about how math is a difficult subject. Partial-products multiplication algorithm The partialproducts algorithm for.
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