Math Minutes: Multiplication

Welcome back to 3rd grade! This year the 3rd grade team got together to start a new segment called Math Minutes. These will be short videos on what our students will be covering in math. Our hope is that these videos will help bridge the gap between home and school with our students and parents.

This week's video is on Multiplication and the ways to model and solve multiplication problems.

Core Math Idea:

Problem:

Solution options:

Here's Mrs. Wheeler to explain! You can watch the video HERE or watch below!

Be watching for more videos!

Mini Math Lesson- x3

Still working on our multiplication facts. We started our 3's today and I'm pretty sure those suckers are mastered!

We started with this poster. We uncovered answers as we went.

Answers covered, we started chanting three numbers: 3, 6, 9.

3..6..9 (beat)
3..6..9 (beat)
3..6..9 (beat)

Once those numbers were in our heads, we started adding the number sentence. Repeat a million times.

3x1 is 3!
3x2 is 6! 
3x3 is 9!

Now, add the next number where the beat was previously. Add some hand motions, or cock your head to the side when you hit 12.

3..6..9..12!
3..6..9..12!
3..6..9..12!

Start the number sentences again! Repeat a million times!

3x1 is 3! 
3x2 is 6!
3x3 is 9!
3x4 is 12!

For the next one, just work on the number sentence 3x5 is 15. Use your hand to hold up 5 when you say 15. Repeat a million times.

3x5 is 15! 
3x5 is 15!
3x5 is 15!

Now all the number sentences so far! Don't forget motions!

3x1 is 3!
3x2 is 6!
3x3 is 9! 
3x4 is 12!
3x5 is 15! (hand out)

Practice 3x6 is 18. When you say the number 18, shake your finger!

3x6 is 18!
3x6 is 18!
3x6 is 18!

Add it to the rest of the sentences, make sure you are doing all the motions! Repeat a million times with motions!

3x1 is 3!
3x2 is 6!
3x3 is 9!
3x4 is 12!
3x5 is 15! (hand out)
3x6 is 18! (shake finger)

Next practice the numbers 21, 24, and 27 as a group. I had my students move their shoulders back and forth- twenty on one side, one, four and seven on the other. Repeat a million times.

Twenty....one!
Twenty.... four!
Twenty.... seven!

Add to the rest of the sentences, using motions.

3x1 is 3!
3x2 is 6!
3x3 is 9!
3x4 is 12!
3x5 is 15! (hand out)
3x6 is 18! (shake finger)
3x7 is 21! (shoulders)
3x8 is 24! (shoulders)
3x9 is 27! (shoulders)

Last one! Are you ready?

3x10 is thir-ty! (make sure you stress the two syllables) Come up with some motion for 30. We used jazz hands.

3x10 is thri-ty!
3x10 is thir-ty!
3x10 is thir-ty!

Bring it all together now! Do the motions!

3x1 is 3!
3x2 is 6!
3x3 is 9!
3x4 is 12!
3x5 is 15! (hand out)
3x6 is 18! (shake finger)
3x7 is 21! (shoulders)
3x8 is 24! (shoulders)
3x9 is 27! (shoulders)
3x10 is 30! (jazz hands)

Want to see it in action? Check the video! We invited Mrs. Webb and Ms. Harper to see us in action and test us on our new knowledge.

You can't hear all of their answers, but all my soldiers got the answers right! Awesome job!

Homework was to finish a x3 practice sheet we started in class. Students who make a 100% will have their names announced during the afternoon announcements!

Mini Math Lesson- x0, x1, x10

Guess what we're working on?! Multiplication facts!

So far, we have mastered, that's right, mastered, our 0, 1, and 10 facts! I know you're impressed!

It helps that we came up with some chants and motions thanks to our SIOP training. :) Here is our chart to remind us of our rules. Mock the pictures all you want. I'm a horrible artist.

Everything in pink symbolizes a motion being made.
Here are some videos of what these chants look like- thank you Ms. Roach!

x0- When you multiply by 0, the answer is 0!

x1- When you multiply by 1, the answer stays the same! (one hand out- showing that we stop at the number being multiplied, don't go any further!)

x10- When you multiply by 10, you add a 0 on the end! (I explained that you add a 0 to the end of the number being multiplied)

We were doing so well with our chants and facts that we just had to share our knowledge! So, we called in Ms. Harper and Mrs. Webb to come check us out!

Watch here:

Or here:

 Needless to say, they were impressed! We also impressed Mrs. Blowe and Mrs. Custer when they visited our class. :)

Ms. Harper was so impressed that she agreed to announce all of my students who made a 100% on their practice sheet during the afternoon announcements. Would you like to see all of my students who were announced?

Here they are!

WE. ROCKED. IT. OUT!

I couldn't be more proud of my students! Tomorrow, we master x2!