# Grade 2 Common Core Standards – Games and Activities

Operations and Algebraic Thinking 2.0A
Represent and solve problems using addition and subtraction

2.OA.1.) Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

 Best Math Friends (Basic Addition and Subtraction Version) It’s not Facebook, it’s not MySpace, it’s BMF, Best Math Friends. Friend as many current celebrities and historical figures as you can by answering their word problems. See if you can friend all 50! Be careful though, if you answer too many problems incorrectly the game will end. Simply click “correct” if the word problem and answer given by the celebrity or historical figure is correct, and “incorrect” if it is not correct.

2.OA.2) Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Work with equal groups of objects to gain foundations in mutliplication

2.0A.3) Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

2.0A.4) Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

Number and Operations in Base Ten – 2.NBT

2.NBT.1) Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases: a. 100 can be thought of as a bundle of ten tens — called a “hundred.”

 Place Value Pirates Dispatch of Sir Francis PV’s wretched band of Place Value Pirates. Read the scrolled place value message at the top of the screen and click on the horrid pirate that whose number matches it!

2.NBT.2) Count within 1000; skip-count by 5s, 10s, and 100s.

 Firefly Nights First, construct your five-step firefly flash pattern.Then, find your partner with the matching flash patterns amidst other flashing fireflies. Try to make through an entire night. In each hour of the night, and as more fireflies light up the sky, finding your match will get harder and harder. This game does not involve number, but rather, recognizing patterns Mathepillar Mathepillar is an outrageously fun game in which players have to order falling numbers on a number line by positioning their caterpillar in the correct place to catch the numbers. There are four stages to the game, and each stage presents a slightly more complicated number line or pattern. If a player can pass all four stages, he or she can print out one of six limited edition butterfly certificates, each featuring a different species of butterfly. Try to collect all six!

2.NBT.3 ) Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

2.NBT.4 ) Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

 Genius Boxing Think you’re good at math? Prove it by using your inequality and equation skills to battle the sharpest mathematical minds that ever lived, including Albert Einstein and Bill Gates! Bowling Pin Math Use your number and equation comparisons to bowl a perfect game! Simply read the message at the top of the screen, and click on the bowling pins with the equations that meet the criteria. Golden Path (choose addition, subtraction, or addition and sub.) There is only one way across the pond – the Golden Path! Forge your frog’s path across the golden path, by using your comparative equation skills to hop to the nearest connected lily pad with the equation that has the largest sum or difference.

Use place value understanding and properties of operations to add and subtract.

2.NBT. 5) Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

2.NBT.6) Add up to four two-digit numbers using strategies based on place value and properties of operations.

 Drag N Drop Math Award winning, drag and drop, platform for students to answer different types of addition, subtraction, multiplication, or division problems. Teachers and students can input their own problems.

2.NBT.7) Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting threedigit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

 Drag N Drop Math Award winning, drag and drop, platform for students to answer different types of addition, subtraction, multiplication, or division problems. Teachers and students can input their own problems. Ultimate Worksheet Generator Generate dozens of types of printable or online worksheets in addition, subtraction, multiplication, or division with or without decimals. Online worksheets give students immediate feedback.

2.NBT.8) Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.

2.NBT.9) Explain why addition and subtraction strategies work, using place value and the properties of operations.

Measurement and Data 2.MD
Measure and estimate lengths in standard units.

2.MD.1.) Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

2.MD.2) Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen.

2.MD.3.) Estimate lengths using units of inches, feet, centimeters, and meters

2.MD.4.) Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.

Relate addition and subtraction to length.

2.MD.5.) Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.

2.MD.6.) Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, …, and represent whole-number sums and differences within 100 on a number line diagram.

 Mathepillar Mathepillar is an outrageously fun game in which players have to order falling numbers on a number line by positioning their caterpillar in the correct place to catch the numbers. There are four stages to the game, and each stage presents a slightly more complicated number line or pattern. If a player can pass all four stages, he or she can print out one of six limited edition butterfly certificates, each featuring a different species of butterfly. Try to collect all six!

Work With Time and Money

2.MD.7. ) Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

 Clockworks Fun, leveled telling time game in which students have two minutes to make as many clocks as they can. Simply look at the time that appears and move the hour and minute hands to their correct places. Four different skill levels including elapsed time! Bedtime Bandits Stay up as late as you can by blasting the enemy clocks falling from the ceiling with your magic flashlight. Simply pay attention to the time that appears on the bottom of the screen. Find the clock that matches the time click your space bar. This game gets harder as you progress to later rounds. Clockmaker Design your own working online clock by changing its colors, font colors, and style. You can even change the numbers from standard numerals to Roman Numerals. When you are done designing your clock, click “play game.” See how long it takes you to identify ten different times. Click “wind,” allow the hands to spin, and then enter the hours and minutes when they stop. Then, click “check.”

2.MD.8. ) Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using \$ and ¢ symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have? Represent and interpret data.

Interpreting Data

2.MD.9.) Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object. Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units.

2.MD.10.) Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple puttogether, take-apart, and compare problems using information presented in a bar graph.

 GraphMaster – Incredible program that allows students to generate three different interactive graphs on the same screen with their collected data. Program uses extreme scripting to generate and validate multiple choice questions and answers based on their entered data. Ice Cream Graphing Ice Cream Graphing is a new graphing program on MrNussbaum.com, designed as an introduction to graphing for students in grades 1-3. The object is to construct a pie chart and bar graph based on specific ice cream orders. Dedicated Bar Graph Generator Use this program to enter collected data and create and print your own bar graph. Dedicated Pie Chart Generator Use this program to enter collected data and create and print your own pie chart. Dedicated Line Graph Maker Use this program to enter collected data and create and print your own line graph.
Geometry
Reason with shapes and their attributes
2.G.1. Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.

 Shape Invaders Step 1.) The world is being attacked by a particularly vile bunch of Shape Invaders. Their mission is to cause widespread chaos by bombarding the Earth with imposter shapes (shapes that claim to ones they’re really not). People across the world are becoming confused by these imposter shapes. It is your job (Hexagon Man) to destroy the imposter shapes and prevent even more confusion and chaos! Only you and your magical, golden hexagons can prevent a disaster of epic proportions! Step 2.) Read the message at the beginning of each round (e.g. “Save the Cube). Blast all shapes that are not the shape mentioned in the message. For example, if the message reads “Save the Cubes”, blast all shapes that are not cubes. You must score 100 points to progress to the next round. Each round becomes harder and requires the blasting of different shapes or groups of shapes. If you blast three incorrect shapes, the game is over and you will have to try again. Use the left and right arrow keys to move and the space bars to blast your golden hexagons.

2.G.2. Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

2.G.3. Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.