Angle Practice Links

These online games will help you practice classifying and measuring angles.  Each picture will take you to a different game.

CLASSIFYING angles as right, acute, obtuse, or straight:

 

 

 

 

 

 

 

 

 

 

MEASURING angles:

 

 

 

 

 

 

 

 

 

 

Decomposing Fractions

We have begun our fractions unit, and one of the first skills we are learning about is how to decompose a fraction.  Until recently, “decompose” was a word that I applied to science–not math!  “Decompose” means to break down or break apart into smaller parts, and I’ve learned that we can apply that word in math, too!  Parents–we did learn this in school, BUT–we just didn’t use the same vocabulary.  Below are a couple of sites that provide the students with practice decomposing fractions.  The Khan Academy site also has a video included on the right side in case the students (or the parents) want to know more about the skill.  🙂  Just click on the picture and that will take you directly to the practice.

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Long Division Videos & Practice Links

We are working hard to learn the process of long division.  Here are a couple of videos that we’ve watched in class:

Click below for a link to 5 websites that can be used to practice long division.

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Screen Shot 2016-01-06 at 7.09.34 PM It is extremely important for 4th grade students to be fluent with their multiplication facts.  Students may use the XtraMath program to help improve their multiplication and division fact fluency.  We try to work on this every day in class, but it may also be done at home.

2 X 2-digit Multiplication

We are currently working hard on learning and practicing the process of multiplying up to 4 digits by 1 digit and 2 digits by 2 digits.  Just learning how to use the “old school” algorithm to solve the problem is no longer enough.  The kids have to be able to explain the process of why that “old school” algorithm works.  I’ve posted short video clips that help to show the multiplication process and what we are expecting the kids to understand and do.  Of course, it is extremely important that the kids learn and memorize their basic multiplication facts!

Multiplication with base ten blocks/area models:

 

“Grid /Window/Box” Method of multiplying 2-digit by 2-digit numbers:

The Process of Multiplication

Last week we began reviewing the process of multiplying 2-digit numbers by 1-digit numbers.  We viewed the videos below to help us understand how we use the values of the digits to multiply.  Ask your child to teach you how to do this type of multiplication.  If he/she can teach it to you, then you  know he/she has learned it!

Decimals

This week we’ve begun studying decimals.  Our study of decimals includes:

  • Representing decimal numbers (tenths & hundredths) using base ten blocks and money
  • Writing decimal numbers in standard, word, and expanded form
  • Comparing and ordering decimals through hundredths
  • Relating decimals to fractions (tenths & hundredths)
  • Determining decimals as points on a number line
  • Adding & subtracting decimals (including money)

Here are some links that your child can use to practice decimal skills:

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