Fun Lunch is next Wednesday Jan. 25. Please order online by Friday if you would like your child to have this lunch.
Math
In math we have been working on deepening our understanding of place value concepts with numbers up to 100. Place value plays such a critical role in math. Recently students have explored how it makes a difference in even and odd numbers as well as supports them in accurate addition and subtraction. As we are in the process of building students concrete understanding of these concepts, we are learning how to use a variety of manipulatives to help us.
The hundreds chart has been helpful throughout the year for students to recognize patterns between numbers and how they are connected. Today in our "number talks" we looked at how the hundreds chart is organized in groups of 10. I would hold up a card that had a hundreds chart partly shaded and students would use their ability to subitize (recognize a group of numbers without counting by ones) as well as their skip counting by 10's to figure out what the number represented was. We were able to get some great conversations going and students shared unique strategies of figuring out the number.
This also led us into some 2 digit addition equations as students described the shaded and unshaded amounts.
For example, after the class decided that this first 100's chart had 60 shaded squares (because there were 6 rows of 10) Ethan commented that he thought there were 40 unshaded squares because he said "60+40 should equal 100 just like 6+4=10" After our discussion, I introduced "base 10 manipulatives" and we discussed the vocabulary that describes these tools. We will continue to use them this week to practice identifying, building, and combining 2 digit numbers and describing their tens and ones.
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