# Transcript of Working mathematically—communicating

VIDEO NARRATOR  John Van de Walle offers the idea that the beginning of a math lesson has the purposes of mentally preparing students for learning by activating their prior knowledge, ensuring the students understand the lesson terms and what is expected of them in their work without being told how to do it. In this class, students are working towards an understanding of multiplication and understanding where they will eventually view multiplication as much more than simply repeated addition. During their last lesson, the students completed a task that asked them to determine the number of pieces that are required to cover every square on a chequerboard. Visit 'Analysing Yesterday's Lesson' for more information. Today, as students enter, they are asked to do a Gallery Walk of their work from the chequerboard problem and to select and label strategies of their peers that make sense to them.

GIRL  You can count by a number and then if you can't keep counting on, you can just stop and then you can just count by ones.

GIRL  What could this be called?

TEACHER  If your math partner isn't here yet, you can talk to someone else. Make sure you and whoever you're talking to agree. [INAUDIBLE]

TEACHER  I'm hearing partners ask another partner a question - "Why do you think it's that?"

GIRL  They only got to 40 so far and they don't know where to go next, so that's counting by ones. [INAUDIBLE]

BOY  And they keep counting up by fours in each row. [INAUDIBLE]

TEACHER  And why did you choose that one to comment on?

SPEAKER CONTENT
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GIRL Some strategies aren't easy for you, so you can just use another number strategy and then continue on it.
TEACHER I agree, mathematicians persevere, don't they?
GIRL Then you can get a different answer when you don't...if you don't know how to count by that. [INAUDIBLE]
TEACHER OK, boys and girls, make sure all your morning jobs are done and then you can sit on the carpet beside your...beside your math partner. Mathematicians, what was your job this morning when you came in? And, Remy, you were starting to speak.