Estimating Differences

Today in class we learned about estimating differences. In other words, rounding to subtract! Estimate means "about" how many. There will not be an exact answer.

Here is a quick video tutorial on how to round to subtract! Just click on the picture below to go to the video on youtube.

Please make sure on your child's homework that they are SUBTRACTING, not adding. 

I also realize that your child's homework says Monday and they weren't here yesterday. Just have them complete the Monday box anyway since that's what we did in class today!

For reading this week, we are working on asking and answering questions while reading non fiction. Here is our note sheet for the week! We will have a test Friday on Asking and Answering Questions in Fiction and Non Fiction.

There are two kinds of questions to ask while reading. Thin and Thick! Here are some posters with more information on asking each type of question.

Your child needs to be able to distinguish a thin question from a thick question on the test Friday!

Example of a thin question would be: What do sharks eat?

Example of a thick questions would be: Why do you think people are so terrified of sharks?

I hope this helps!

Addition with Base 10 Models

Here is a video lesson of addition using Base 10 Models! The first one shows addition with no regrouping and the second is how to draw the picture models and regroup.

You need to click on the images below to go to the website and view each video! These are not live videos below. 

Addition using base 10 models with no regrouping.

Addition using base 10 models with regrouping!

This website is called Learnzillion.com! There are tons of free videos that go along with every math and reading standard. I recommend if you are having homework trouble to check this website first for help! You will probably need to sign up for a free account. 

Hope this helps!

Your child also has an addition review project due on Friday, 

It looks like this!

They must complete this on their own half sized poster board or large sized construction paper. I will get some large construction paper for anyone who needs it. Students must follow the directions for each square, but only copy the highlighted things onto the project poster. 

Here is an example of what to copy:

This is all a review of things we have already learned this year. I have told the class that they may take home their math notebooks to help them as I know they might not remember some of these things. Most of this should be easy recall though! 

Let me know if you still have questions! 

Happy Monday!

Using an Open Number Line to Add

Here is what we did in class today! We talked about using an "open number line" to add larger numbers. We start with the big number and add it to our number line. Then, we decompose the number you are adding into hundreds, tens, fives, and ones (depending on how big your number is). Here is a quick video tutorial!