SMCPS uses Bridges in Mathematics, 2nd Edition, as a primary resource for teaching your child the Common Core State Standards for Mathematics.

Fourth Grade Math Content

  • understand factors and multiples, e.g., 1,2,4,5,10, and 20 are all factors of 20, and 20 is a multiple of each of those numbers
  • understand that a prime number has only 2 factors—1 and itself, while a composite number has more than 2 factors
  • multiply multi-digit numbers using strategies based on place value and properties of operations
  • divide 2-digit numbers by 1-digit numbers using strategies based on place value and the relationship between multiplication and division
  • read, write, and compare multi-digit numbers and round multi-digit numbers to any place
  • add and subtract multi-digit numbers accurately and efficiently
  • recognize and generate equivalent fractions
  • compare two fractions with different numerators and denominators
  • add and subtract fractions and mixed numbers with like denominators
  • multiply a fraction by a whole number
  • write fractions with denominators of 10 or 100 in decimal notation
  • compare decimal numbers with digits to the hundredths place
  • know the relative sizes of measurement units within one system of units, including metric length, metric mass, customary weight, metric volume, and time
  • use formulas for area and perimeter of a rectangle to solve problems
  • measure and sketch angles with a protractor
  • classify 2-D shapes
  • identify and draw lines of symmetry

Family Welcome Letter An introduction to Bridges including an overview of the year.

Parent Letter by Quarter

Please click on the links below to read more detailed parent letters for each unit.

Quarter 1

Quarter 2

Quarter 3

Quarter 4

Resources for Helping Your Child at Home

The following selection of games and activities will help your child to practice some of these skills at home.


  • Times Square This game provides practice with multiplication facts as players race to be the first to get 4 products in a row on the game board. Use "guest pass" to enter game list and play against the computer.
  • Factor Dazzle  Players score points for finding all the factors of target numbers set by their opponents. Use "guest pass" to enter game list and play against the computer.
  • MathTappers: Multiples  App compatible with iPhone, iPod touch, and iPad for math practice on the go. This is a simple, free game designed to help learners make sense of multiplication and division using visual models.


  • Drag Race Division  Race to answer basic division problems. Students can race one another or play against the computer.


  • Dig It  Players take turns digging in a field loaded with precious stones. The object is to collect as much dirt and as many stones as possible. Players tell the shovel where to dig by using a set of numbers to make a fraction–including improper fractions–and then locating that fraction on a number line that runs across the field. The more accurately they locate the fraction, the better their score. Students may need some help to get started. Use "guest pass" to enter game list and play against the computer.
  • Fraction Feud  Players use number "cards" to create fractions that are larger (or smaller) than their opponents' in a series of mock jousts. See the "fraction bar chart" to figure out how big a fraction is in relation to an opponent's. Use "guest pass" to enter game list and play against the computer.
  • Drop Zone  Players add fractions that will total 1 as they race to win 5 points in this action-packed game. Develops fraction sense, estimation, and skill at adding fractions with like and unlike denominators. Use "guest pass" to enter game list and play against the computer.
  • Equivalent Fraction Bingo  Match the numerical fraction to its equivalent visual model.
  • Fraction Fling  Match fraction to the visual model and hit the fraction to answer the question. Players can choose to use mixed fractions while playing.
  • MathTappers: Estimate Fractions  In this free app for iPhone, iPod touch, and iPad, students relate fractions (symbols and pictures) to the nearest half. Then they use fraction estimates in addition and subtraction problems. Excellent game to use while on the go.


  • Pecking Order  Arrange fractions and decimals from least to greatest on a number line.


  • neXtu Players place shapes on a tessellating game board, collecting points and capturing opponent's pieces. Math concepts include: greater than, less than, tessellations, and symmetry.
  • Sammy’s Symmetry Shuffle Place pattern blocks in the correct positions to complete the pattern/shape on the line of symmetry. Three difficulty levels. (Flash)
  • Lines of Symmetry  Click on shapes with one, two, or more lines of symmetry. (Flash)
  • Alien Angles  Slide a bar to position a ray to estimate different angles in order to rescue lost space aliens.

More Games

The links below contain some of the best games for elementary math students to play at home. Look through the sites to find other games for your child.

  • ABCya!  The math games on this site, modeled from primary grade lessons, were approved of or created by teachers.
  • BBC Bitesize  This site contains a variety of high-quality games, including the “Dick and Dom” series, resembling mini movies in the style of Monty Python. Skip the money game on this British site. Also seeBBC Bitesize  Level 1.
  • Calculation Nation  The National Council of Teachers of Mathematics Illuminations site hosts over 10 games that includes notes for parents. Students can either register and challenge other players online or use the "guest pass" button to enter the game list and play against the computer. Designed for upper elementary and middle grades.
  • Cyberchase  The popular PBS show hosts a site with about 50 games and activities, along with movie clips that explore math concepts.
  • Johnnie's Math Page  Use this online index to find hundreds of interactive math games on the web, organized by concept.
  • National Library of Virtual Manipulatives  Organized by grade band and math concept, this Utah State University site contains a wide selection of virtual manipulatives.

Other Helpful Information