GoMath Chapter 2

During the next few weeks, our math class will be learning about multiplying by 1-digit whole numbers.  We will investigate strategies for multiplying 2-, 3-, and 4- digit numbers by the numbers 2-9.

Important Chapter Vocabulary
1.  Distributive Property;  The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products.
2.  Partial Products;  A method of multiplying in which the ones, tens, hundreds, and so on are multiplied separately and then the products are added together.

            Partial Products




Multiplying by tens, hundreds, thousands

7 x 4 = 28
7 x 40 = 280
7 x 400 = 2800
7 x 4000 = 28,000

GoMath Chapter 1

During the next few weeks, our math class will be learning how to use and represent whole numbers through the hundred thousands place.  We will also be adding and subtracting multi-digit numbers.

Important Chapter Vocabulary
1.  Estimate;  A number close to an exact amount.
2.  Expanded Form;  A way to write numbers by showing the value of each digit.
3.  Period;  Each group of three digits separated by commas in a multi-digit number.
4.  Round;  To replace a number with another number that tells about how many or how much.
5.  Standard Form;  A way to write numbers by using the digits 0-9 with each digit having a place value.
6.  Word Form;  A way to write numbers by using words.

Expanded Form;  3,000 +500+10+9
Standard Form;    3,519
Word Form;         three thousand, five hundred nineteen

Chapter 12 GoMath

In chapter 12 we will be learning about both customary and metric units of length, weight/mass, and liquid volume.  We will also find elapsed time and learn to compute with mixed measures.  There are eleven sections in this chapter.

Important Chapter Vocabulary
1.  cup;  A customary unit used to measure liquid volume.
2.  decimeter;  A metric unit for measuring length or distance
3.  fluid ounce;  The smallest customary unit for measuring liquid volume.
4.  gallon;  A customary unit used to measure liquid volume.
5.  half gallon;  A customary unit used to measure liquid volume.
6.  line plot;  A graph that shows the frequency of data along a number line.
7.  milliliter;  A metric unit used to measure liquid volume.
8.  millimeter;  A metric unit used to measure length
9.  ounce;  A customary unit used to measure weight.
10.  pint;  A customary unit used to measure liquid volume.
11.  pound;  A customary unit used to measure weight.
12.  quart; A customary unit used to measure liquid volume.
13.  second;  A small unit of time.
14.  ton;  A customary unit used to measure weight.
15.  benchmark measurement;  A reference which you can measure by.
     



 

GoMath Chapter 13

We are skipping chapter 12 for now and moving on to chapter 13.  We will come back to 12 after chapter 13.  In chapter 13 we will be learning about perimeter and area.  We will explore the concept that area is a measure of how many square units cover a flat surface. We will also learn the formula for finding the area of a rectangle.

Important Chapter Vocabulary
1.  Area;  The number of square units needed to cover a flat surface.
2.  Base;  Any side of a two-dimensional figure
3.  Formula;  A set of symbols that expresses a mathematical rule.
4.  Height;  The measure of a perpendicular from the base to the top of a two-dimensional figure.
5.  Perimeter;  The distance around a figure.
6.  Square Unit;  A unit of area with dimensions of 1 unit x 1 unit.

Formula for perimeter of a rectangle;   (2 x length) + (2 x width) =

                                                      
                                                          (2 x 7) + (2 x 3) = ?
                                                             14   +   6 =   20
                                                               perimeter = 20

Formula for perimeter of a square;  (4 x one side) =

                                                        
                                                                (4 x 4) = 16 
                                                             perimeter = 16

Formula for area;  (base x height)

                                   
                                
                                            (7 units x 4 units) = 28 square units
                                                         area = 28 square units 
                                                

GoMath Chapter 11

In our geometry unit we are moving on to learning more about angles and angle measures.  We will also learn to use a protractor to measure and draw angles.  There are five sections in this chapter.

Important Chapter Vocabulary
1.  Clockwise;  In the same direction in which the hands of a clock move.
2.  Counterclockwise; In the opposite direction in which the hands of a clock move.
3.  Degree;  The unit used for measuring angles.
4.  Protractor;  A tool used for measuring the size of an angle.

PROTRACTORS

GoMath Chapter 10

Throughout the next few weeks, we will be studying two-dimensional figures.  The students will use definitions to identify and describe characteristics of these figures.  Our homework will have identifying triangles and quadrilaterals.  This chapter has seven sections.

Important Chapter Vocabulary
1.  Acute Triangle;  A triangle with three acute angles. (less than 90 degrees)
2.  Line Segment;  A part of a line that includes two points, called endpoints, and the points between them.
3.  Obtuse Triangle;  A triangle with one obtuse angle.  (larger than 90 degrees)
4.  Ray;  A part of a line, with one endpoint, that is straight and continues in one direction.
5.  Right Triangle;  A triangle with one right angle (90 degrees) and two acute angles.

GoMath Chapter 9

Our class will relate both fractions and money to place value and will learn how to rename fractions as decimals.  We will also add fractional parts of 10 and 100 and compare decimals through hundredths.  There are seven sections in this chapter.

Important Chapter Vocabulary
1.  Decimal;  A number with one or more digits to the right of the decimal point.
2.  Decimal Point;  A symbol used to separate dollars from cents in a money amount and to separate the ones and the tenths place in a decimal.
3.  Equivalent Decimals;  Two or more decimals that name the same amount.
4.  Hundredth;  One of one hundred equal parts.
5.  Tenth;  One of ten equal parts.

8/10   =  0.8