Ep 27: The 100’s Chart Games, Centers, and Missing Number Activities

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The hundreds chart is an amazing tool for building number sense

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I'm gonna talk to you about how you can use it in morning meeting how you can use it at centers how you can use it

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For problem-solving the possibilities really are endless and stay tuned for the end for something

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I didn't even know about until I was doing research for this episode

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Hello and welcome to making number sense make sense a podcast for elementary teachers

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Specifically early elementary teachers looking to really make an impact in the number sense of their students

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Gonna start off with my hundreds chart journey

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So when I first started I had the hundreds chart pocket chart

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They had it color-coded so all of the first row was red all of the second one was yellow

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My team liked everything rainbow colored so I was like cool and they told me alright flip them all over and each day each day

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School you flip one over and it creates some mystery around what the next number is you can talk about the number

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I was like cool. I did it liked it and that was kind of the end of it

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I didn't really do that much with the hundreds chart fast forward

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I asked the kids if they had any questions about the hundreds chart and they had some really interesting questions

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They asked me things like well, why are all of those numbers red?

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Why do all of those numbers end in twos?

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Why do all of those numbers start with one and then they really started to notice things about the hundreds chart that I didn't necessarily

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Point out but because they were seeing it so much

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They started to be curious about it and then I was like this is really a tool

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I need to look more into and really utilize more and so in using it and counting, you know when you're

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Working with younger kids like you might be working on counting to 10 working on counting to 20 and for a kid

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They know that 20 is a big number because they've been working and counting to 20

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That seems like a really big number a hundred seems like a huge number, but they don't necessarily understand how much bigger

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100 is than 20 and that's because they don't

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Necess they haven't necessarily built up that relationship yet

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So when they're looking at a hundred chart and working with numbers that way they can see how many they can physically see

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How many more rows it is not that they need to be able to count a hundred objects yet in kindergarten

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But they can start to see it

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They start to see patterns in the hundreds chart and you can really leverage that curiosity

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With centers and morning meeting games and problem-solving activities to develop a great number sense

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So some things that you can do in your morning meeting to work with the hundreds chart is counting around the circle to 100

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So that with for this activity the first student starts counting one the next student starts counting two

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I would be careful with this one though because if student gets nervous they might forget

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You're gonna want to decide how much help you want to offer or if that's something you want to reserve for maybe a smaller group

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Of kids versus a larger group of kids along the counting route

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You can do like group counting that we coral count together from 1 to 100 can also take a long time

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You might want to spice it up a little by doing some movement counting in there

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So you do the same movement from 1 to 10 and then do a different movement from 11 to 20

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So you might be jumping from 1 to 10. You might be clapping from 11 to 20

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You might be hula hooping with not a real hula hoop

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Just make it the motion or maybe pretending you're throwing a basketball from 20 to 30 to keep it fresh get the kids moving

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But also have them hearing what the numbers sound like when you count that high

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One thing I will say about rope counting is it's very good to for students to be hearing what numbers sound like

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However, you do want to keep an eye out for students who are not necessarily

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participating in the actual coral count because those are the students who probably need it the most and might feel nervous about

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Counting even if it's corally and might not be doing it. So that's when a coral count can really come in

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Handy can really be helpful. I'll leave a link to my blog post and podcast episode about coral counting specifically

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But that's great on honing in on tricky number sequences or when you want to highlight a specific number pattern

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Coral counting is a great number sense routine to use for that purpose a really easy game is guess my number

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So for guess my number you can say to your kids. I'm thinking of a number between 1 and 100

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I'm thinking of a number between 1 and 20 and kind of like a 20 questions type thing

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They can ask you what your number is so they might say is it 50?

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Is it a hundred and those quickly realize that asking just random numbers is not a great way

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To figure out what your number is

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especially if they're working for with numbers to 100 what you might encourage them to do or what they might realize is

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It might be a more efficient strategy to say well

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Does your number end in a zero is your number?

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bigger than 50 is your number smaller than 20 and then from there they can really start to

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Eliminate numbers that don't fit that criteria and if you do have a hundreds pocket chart

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You can even turn around the numbers that don't fit that criteria for them

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So they can start to see the numbers that are left that game is a lot of fun to play too

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You can even play that in the hall if you're waiting for special if you're waiting for recess if you're waiting in between lunch and recess

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Even if you don't have a hundreds chart, they can still get the same idea

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especially if they've played that game before or done that activity before to start to think about numbers in relation to each other as

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far as

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Problem-solving with the hundreds chart. I created a

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a series of hundreds chart problems called the hundreds chart thief and in it there are several different

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Thieves who steal the numbers in a different pattern

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so the first one I will link below that you can get for free and

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In it this thief steals his numbers in a pattern that kind of looks like the 10 more 10 less and

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Number before and after pattern so the kids will get one or two numbers

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Left and then the kids have to figure out what the other missing numbers are and that problem is already thin-sliced with the other

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Pieces of the puzzle that he's taken and check your understanding problems already so they can try and get the numbers back that that thief

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Has stolen so I'll leave that link for you below and in terms of centers and activities

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There are so many things that you can do with the hundreds chart

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I'm just gonna give you some ideas hundreds chart puzzles are really simple if you want to you can just print out a hundreds chart and

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Laminate it and then cut it up and have the kids put it back together now the bigger the pieces the easier it is

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You can cut every single number and then it's literally a hundred piece puzzle that they can try and put back together that will take

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Them a while if you're working with younger kids, so be aware of that

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But you can definitely do that to make it easier

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You can just cut it up their columns or across the the rows and then you can start to make it a little more

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Complicated make the pieces smaller or larger if you want to try and change the level of difficulty

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Another game that you can play that kind of goes along with the hundred start puzzle is called

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Missing numbers spin and fill and for that one they have two spinners

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They have a 10 spinner and a ones spinner so they would spin one of the tens

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So let's say they got 50 and they would move their spinner over and spin one of the ones that they got 51

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So they would put 51 wherever they want in the little puzzle

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And then they have to figure out what the other numbers would be around it in that little puzzle piece and they can write it

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On a recording sheet if you want the kids to do that and then they would erase it if you have it in a dry erase

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Sleeve or you laminated it and move on and there's lots of different puzzle piece arrangements

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They can do and that again is really good for having them think about where the numbers go and it starts to really work with

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Place value to like what goes in the tens place and what goes in the ones place and if you're looking for something even less prep

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There's also tons of no prep recording sheets or no prep worksheets that you can use just filling in the hundreds chart

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I wouldn't do those all of the time. But if you need something quick, that's something you can definitely do and

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As promised my bonus when I was doing my research on the hundreds chart to see if there's anything big I was missing

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I came across this little factoid I guess about the hundreds chart

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Did you know that if you draw a rectangle on any point of the hundreds chart and add the two numbers in?

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the corners on the diagonal

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Then they'll both equal the same number. So if I drew a rectangle around 1 2 3

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13 23 22 21 and 11 if I add on the diagonal

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so if I add 1 and 23 it equals 24 and if I add 3 and 21 it also equals 24 any

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Rectangle you draw on the hundreds chart will have the same effect

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So say I did a bigger one if I did 1 7 and then 27 to 21 and back

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1 plus 27 is 28 7 plus 21 is also 28

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It works every time and I had never thought about that before I never noticed that before and I was like, huh

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No way

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You might have known that before I didn't I would love for you to ask your students

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Why they think that is and see what responses they get

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I just thought it was really interesting and never seen it before and I wonder what series

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They might have and feel free to send me a message on Instagram and let me know what they say

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I hope this gave you some ideas of how to use your

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Hundreds chart and I hope that you use it more if you hadn't been using it yet