Edison School District

Developing a desire for lifelong learning

By the end of third grade, students deepen their understanding of place value and their skill with addition,  subtraction, multiplication and  division. They estimate, measure and describe objects in space.  They use patterns to help solve problems.  They represent number relationships and conduct simple probability   experiments.

Number Sense

Þ   Students understand place value

Þ   Count, read and write numbers to hundred thousands

Þ   Compare and order numbers to   hundred thousands

Þ   Identify place value for each digit in numbers to hundred thousands

Þ   Round numbers to ten thousand to the nearest ten, hundred and        thousand

Þ   Use expanded notation (example:    3,206 = 3000 + 200 + 6)

Þ   Solve problems using addition,    subtraction, multiplication and division

Þ   Know basic addition and   subtraction facts for numbers  between 0 and 9

Þ   Find the sum or difference of two whole numbers between 0 and 10,000

Þ   Estimate sums and differences

Þ   Know multiplication facts for     numbers between 0 and 10

Þ   Use the inverse relationship of   multiplication and division to compute and check answers

Þ   Know fact families through 9 for multiplication and division (example:  3x6=18, 6x3=18, 18 - 3 = 6, 18 - 6 = 3)

Þ   Solve multiplication problems of    multi-digit numbers by one-digit number (example: 3 x 2,148)

 

Þ   Solve division problems in which a multi-digit number is divided by a         one-digit number

Þ   Understand the properties of 0 and 1 in multiplication and division

Þ   Determine total cost when given unit cost and number of units

Þ   Determine the unit cost when given the total cost and number of units 

Þ   Understand the relationships between whole numbers, simple fractions and    decimals

Þ  Compare fractions (example: 2/4 = 1/2)

Þ   Place fractions in order

Þ   Add and subtract simple fractions

Þ   Know place value of a decimal fraction to tenths

Þ   Compare and order decimal fractions to tenths

Þ   Add, subtract, multiply and divide numbers with decimals

Þ   Know that fractions and decimals are two different representations of the same concept

Algebra & Functions

Þ   Students select appropriate symbols, operations, and properties to represent, describe, simplify and solve simple      number relationships

Þ   Solve problems involving equations or inequalities

Þ   Select appropriate symbols to make an expression true (example: 4    3 = 12)

Þ   Express simple unit conversions (example:  # in = # feet x 12)

Þ   Recognize and use the cumulative and associative properties of multiplication (example: if 5x7 = 35, then 7x5 = 35)

Measurement & Geometry

Þ   Students use appropriate units and measurement tools to measure objects

Þ   Choose appropriate units when      measuring

Þ   Estimate and determine the area and volume of figures

Þ   Determine the perimeter of a polygon

Þ   Convert from centimeters to meters and hours to minutes

Þ   Read and write dates using a calendar

Þ   Tell time on analog and digital clocks to the nearest minute

Þ   Understand the concept of a.m. and p.m.

Þ   Calculate elapsed time

 

Þ   Students describe and compare      geometric shapes

Þ   Identify line segments, rays, lines, parallel lines and right angles

Þ   Identify, describe and classify       polygons

Þ   Identify various triangles and           quadrilaterals 

Þ   Identify right angles and determine whether they are greater or less than a right angle

Þ Identify congruent figures

Þ    Recognize and create symmetrical   figures

Þ   Identify, describe and classify three-dimensional geometric objects

Statistics, Data Analysis

& Probability

Þ   Students conduct simple probability experiments by determining the      number of possible outcomes and make simple predictions

Þ   Identify whether common events are certain, likely or improbable

Þ   Record the possible outcomes for a simple event (example: tossing a coin) and systematically keep track of the outcomes when the event is repeated

Þ   Summarize and display the results in a clear and organized way

Þ   Use results of probability  experiments to predict future events (example:  use a line plot to predict the temperature forecast for the next day)

Mathematical Reasoning

Þ   Students make decisions about how to approach problems

Þ   Analyze mathematical problems

Þ   Determine when and how to break a problem into simpler parts

Þ   Use strategies, skills and concepts in finding solutions

Þ   Use estimation to test the  reasonableness of answers

Þ   Apply strategies from simpler  problems to more complex problems

Þ   Use words, numbers, symbols, charts, graphs, tables, diagrams and models to explain answers

Þ   Express solution clearly and support solutions with evidence

Þ  Make exact calculations and check answers