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| Learning about place value by grouping beans by 10's to figure out how many all together |
We have been focusing on these math concepts:
Place value: Making groups of tens to count into the hundreds
We estimated and then counted how many beans were in a bag of kidney beans. In the picture above, the papers represent the 100's, 10's and 1's places. As beans were grouped by tens in small cups, they were then combined into containers of 100. We have also solved riddles to practice place value such as: I have 2 tens and 5 ones. Who am I? And, more challenging: If you gave me 2 more tens, I would be 80. Who am I?
We estimated and then counted how many beans were in a bag of kidney beans. In the picture above, the papers represent the 100's, 10's and 1's places. As beans were grouped by tens in small cups, they were then combined into containers of 100. We have also solved riddles to practice place value such as: I have 2 tens and 5 ones. Who am I? And, more challenging: If you gave me 2 more tens, I would be 80. Who am I?
Finding the difference between quantities through comparing and subtracting
We have estimated how many scoops of a cup it would take to get 50 beans. Then we counted our estimate by grouping the beans by 10's. We compared if we scooped greater than or less than 50. Finally we wrote an equation to show our work. So if we scooped 68, our equation would be 68-50=18. We found out that there are 18 more beans in our estimate than 50. 18 is the difference.
We have estimated how many scoops of a cup it would take to get 50 beans. Then we counted our estimate by grouping the beans by 10's. We compared if we scooped greater than or less than 50. Finally we wrote an equation to show our work. So if we scooped 68, our equation would be 68-50=18. We found out that there are 18 more beans in our estimate than 50. 18 is the difference.
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