experttaya.blogg.se - Show me lattice multiplication

SHOW ME LATTICE MULTIPLICATION HOW TO

Write their name above the calculations on the board. Ask a volunteer to explain how they got the answer.

So, what’s the answer? 400 and 230 were possible answers.Turn to a partner and explain how you got your answer.

You might find even more while we’re talking about it. If you have two ways of getting the answer, put out another finger. Putting your thumb right by your chest lets me know that you’re ready, but doesn’t disturb people who are still thinking.

When you have an answer, give me a thumbs up.

Without using paper or pencil to calculate, write down an answer to 25 x 16.

I started the meeting with a number talk on 25 x 16. Chapter 4 is on computation and includes a few examples of alternative algorithms (procedures) and invented student strategies. Written for K-6 teachers, this book is useful for adult educators since it helps us understand basic mathematics and think about ways to incorporate it into our instruction. I introduced the topic of the meeting by talking about the book, Math Matters by Chapin and Johnson. What a coincidence! This is exactly what I was planning to explore today.

SHOW ME LATTICE MULTIPLICATION HOW TO

The student said that she only knew how to do multiplication using the method on the right and wanted to learn the method on the left. Before the meeting, Davida showed Rachel and me a multiplication method a student had showed her earlier in the day.