Rodeo Round Up...or Down

The third graders have been working on rounding this week. We started with a lot of number line work and talking about what decades certain numbers fell between. For instance, if given the number 57, students would say, "57 is between 50 and 60, it is closer to 60." Soon the students understood the "rules" for rounding. We made an anchor chart about when to round up and when to round down. In small groups the students made a giant number line and color coded the decades.  Then they went through each number and colored it according the decade the number would round to.

 

 I'm sure you've seen all the work the students have done on SeeSaw.  We have also been playing games in class and practicing this concept in our math journals.  They are working so hard.

 

 

Here is an easy little game to play at home if you are interested in giving your child some extra practice.  You will need playing cards to play this rounding game of top it.  Players will pull two cards and make a two digit number.  Then, they rounded the number to the 10s place.  They compare their number to the opposing player and the greater number takes all the cards.  The winner has the most cards at the end of the game. You could adjust this game for rounding to the 100s place as well.  We will be working on rounding to the 100s place next week.