2nd Grade
Common Core Math

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Operations and Algebraic Thinking



Represent and solve problems involving addition and subtraction.

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.


  1. Math Facilitator Lessons


  1. Teachers Tool box
  2. Addition & Subtraction -Truly an outstanding website. You will want to use this over and over again!
  3. Addition  Alien addition space game used here to help in learning addition. 4 Star
  4. Advanced Subtraction game Very good
  5. Eggs on Legs Addition Crack the egg to see if you have the answer.
  6. Addition Jet ski addition game 4 Star
  7. Addition Two digit
  8. Calculation Balance Great website to connect numbers to words. (Many different grade levels)
  9. Math Dictionary animation for kids This is an outstanding website allowing you to explore a comprehensive view of math with many examples 4 Star
  10. Talking Calculator Students will have fun entering number for all areas.
  11. Sheppard Math On line and fun site for learning Math Covers a lot of areas. 4 Star 
  12. A Math Game Sheet for 2nd Grade 4 Star
  13. Number Line - Manipulative
  14. Math Glossary Click on this link to illustrate and teach. This link will present a Visual illustration. 4 Star
  15. Math Jeopardy Here is a jeopardy game that the 4 star
    student can play right on the screen by themselves. The highest score will be posted on the Internet for a few days.
  16. APLUS MATH You may get yourself or your class ranked in the state when playing this game. 4 Star
  17. Speed Addition Level 1 This is another great website where you must compete against the clock. Much Fun 4 star
  18. Speed Addition Level 2 Only the best of the best can complete this one. Much fun 4 star
  19. Speed Addition Level 3 See if you can handle it. 4 star
  20. Speed Subtraction Level 1 Great website Fun to compete against the clock 4 star
  21. Speed Subtraction Level 2 Much harder can you do it ?
  22. Speed Subtraction Level 3 It is here as of Oct. 2006 see if you think you can handle it.
  23. Mathematical reasoning level 1 See how many levels you may go to
  24. Mathematical reasoning level 2 Harder than (1) can you do it? Must complete Level 1 to go to Level 2
  25. Kidport-Great site to assist in all areas
  26.  Splat Square - This hundreds chart allows the selection of any number by clicking a color to splat then clicking on the number.
  27. Worksheet Generator - Print your own one hundred chart. A one hundred chart can be used to teach counting or skip counting.
  28. A plus for Math This website will allow the student to use flash cards to review for their math. Outstanding site.
  29. Callum's Addition Pyramid In this game students choose easy, medium, and hard addition problems to solve in an Egyptian pyramid design. When they get 500 points, the mummy's tomb opens.
  30. Balancing Calculations    Great site and fun many levels depending on grade that is learning.


Add and subtract within 20.

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.

  1. Subtraction Island chase Jet Ski subtraction game 4 Star
  2. Subtraction quiz
  3. Math Addition You may use any number with this website. Very good
  4. Math Subtraction You may use any number with this website. Very good
  5. Addition Problems Figuring out addition problems a unique way.
  6. Subtraction Problems Figuring out subtraction problems in a unique way.
  7. Power Numbers 1 This site will allow the student to use mathematical reasoning 4 star
  8. Power Numbers 2 This site will allow the student to use mathematical reasoning. This site requires password obtained from site 1 4 star
  9. Power Numbers 3 This site will allow the student to use mathematical reasoning. This site requires password obtained from site 2 4 star
  10. Add and Subtract 2 digit numbers

Work with equal groups of objects to gain foundations for multiplication.

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.

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.





  1. Ghost Blasters - Click on ghosts that are multiples of ten. Click as many times as you can, you can get multiple points on each ghost. 4 star
  2. Spooky Sequence - count by 10s 4 star
  3. Spooky Sequence - count by 5s 4 star
  4. Ant Parade - count by twos and threes to pick correct number of ants
  5. Rabbits - Students recall multiplication facts using a hundreds chart. (Author - Kaye Maddox)  
  6. Spooky Sequences - One of the ghosts is missing a number. Click on the numbers along the bottom to enter the right number in the sequence. one digit numbers (by ones) | two digit numbers (by ones) | three digit numbers (by ones) | counting by twos | counting by fives | counting by tens | backward by ones | backward by twos | backward by fives | backward by tens
  7. Super Sequencer - Input the starting number of a sequence, the increment (amount of change), and then select the speed with which the next numbers will be displayed. an your students predict the next number?
  8. Three is a Magic Number - Students learn multiples of three. (Author - Carol Senn)
  9. Odd or Even numbers   Anker...
  10. Making Patterns with odd and even numbers
  11. Difficult game to determine odd and even numbers.... well worth a try
  12. Swinging ted for odd and even
  13. Odd and even numbers
  14. Odd and even numbers


Number and Operations -Base Ten


  1. Understand Place Value

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.

b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

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

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

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.


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

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

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

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 written method. Understand that in adding or subtracting three-digit 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.

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

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



  1. Base Ten - Manipulative
  2. Number Assembly Game 1 Children will apply what they have learned about reading and writing three digit numbers and demonstrate how to read and write four­digit numbers 4 star  
  3. Number Assembly Game 2 Children will apply what they have learned about reading and writing three digit numbers and demonstrate how to read and write four­digit numbers
  4. Place Values This is a Smart Board Lesson. Outstanding and complete for learning this indicator. Created by: Sabrina Williams 4 Star
  5. Base 10 - build blocks to create numbers with tens and ones. 4 star 
  6. Give the Dog a Bone - use a hundreds charts to find numbers. A very good website. Students will enjoy. 4 star
  7. Funschool Falling Leaves This is a game of catching falling leaves in a basket. The scoring of the game involves collecting single leaves until you have ten and then they are moved into the tens column. If you miss leaves, numbers are subtracted. This demonstrates making tens and taking them apart. This is a simple game students can do independently
  8. Chip Abacus - Virtual Manipulative This online manipulative allows the user to move chips between the 1's, 10's and 100's place, seeing the quantities split or combine as needed.
  9. Big Numbers This site helps you understand place value and how to read and write large numbers
  10. Place Values This is a Smart Board Lesson. Outstanding and complete for learning this indicator. Created by: Sabrina Williams 4 Star
  11. Video -to accompany Smart Board lesson on Place Value
  12. Flash Video on Place values of numbers. Outstanding presentation of this idea. 4 Star
  13. Group the Blocks and Identify A place value game which can help children to understand how grouping works in numbers with hundreds, tens and units. 4 Star
  14. Bead Numbers An online abacus involving some problem solving. The free area is a good teaching tool for demonstrating how an abacus with hundreds, tens and ones works. 4 Star
  15. Numbers to 1000 Good for demonstrating place value for 3 digit numbers. 4 Star
  16. Abacus A great resource for demonstrating place value, counting, addition and subtraction. You need to click on the signs to add or remove beads. 4 Star
  17. Double Function Machine-Two operation function machine with options to hide or reveal numbers and set all operations and numbers.
  18. Number Line using a Mummy Very good Manipulative
  19. Playing with numbers    Many areas to go to.  Must click on next to find what your looking for.
  20. Multiple function machine   Outstanding method of teaching
  21. Partitioning numbers -   Many different levels for a grade levels illustration of place values.


  1. Place Value Game 1 (Moving numbers to match )
  2. Place Value Game 2  (Millionaire)
  3. Place Value Game 3  (Fun problem solving)
  4. Mr. Anker Tests Place Value (4a)
  5. Mr. Anker Tests Place Value (4b)
  6. Mr. Anker Tests Place Value (4c)
  7. Place Value Guide
  8. Math Man  (just like pack man -- Fun to play)

Measurement and Data


Measure and estimate lengths in standard units.
  1. The Ruler Game - Learn To Read A Ruler (inches only - increments from inches to sixteenths)
  2. Measure it - practice using a ruler - inches and centimeters
  3. Centimeters - To Nearest Whole Number (from FunBrain)
  4. Centimeters - To Half Centimeter (from FunBrain)
  5. Inches - To Nearest Whole Number (from FunBrain)
  6. Inches - To Quarter Inch (from FunBrain)
  7. Teaching Measures – Choose from three modules; length, mass, and capacity. Each category offers several activities for your large screen display as well as supporting worksheets.
  8. Worksheet Generator - (inches only) Print your own worksheets to let your students practice reading a ruler.
  9. Weight and Capacity Outstanding Flash presentation 4 Star
  10. Flash Video on Estimation of Measurements 4 Star
  11. Measure with your students 4Star
  12. Measure with Paper Clips Have your students learn how to measure using paper clips.
  13. Measure with Inches
  14. Measure with Pounds
  15. Which tool to measure with
  16. Hours
    Quarter Past
    Quarter To
    Exercise 1 a
    Exercise 1 b
    Exercise 2


    Exercise 1 a
    Exercise 1 b  
    Exercise 2 a
    Exercise 2 b
    Exercise 1 a
    Exercise 1 b
    Exercise 2


    Exercise 1 a
    Exercise 1 b
    Exercise 2 a
    Half Hours
    Exercise 1 a
    Exercise 1 b
    Exercise 2 a
  17. Checking your 5 senses challenged This site will allow you the teacher to show students why they should measure and not allow for their own senses to always make the correct decision. 4 Star
  18. Estimation of Measurement Flash presentation.
  19. Customary Units match game In this "Concentration-style" game students are given 12 face down tiles with measurements in customary units. They need to flip over the tiles two at a time and try to match tiles that have equivalent measures (like "2 ft" and "24 in"). The tiles are randomly generated so they can replay game over and over.


Relate addition and subtraction to length.
  1. Swimming Race-Fill in the empty boxes correctly to make your swimmer go faster.


Work with time and money.
  1. You will discover a website with videos - worksheets- smart board to help you teach your students about coins


  1. Time and Money - Web Page Many examples

  2. Counting Coins Money - Manipulative

  3. Counting Money - Different levels of counting money.

  4. Snack Machine Using smart board determine values and
    Submitted by: Joe Andrews
    Outstanding website

  5. Counting Change - a match game, counting coins to find amount of change and matching it with a numerical value. Very good site 3 star

  6. Cash Out - You're the cashier at this crazy store. You need to give change to the customers buying things. Try to sell as many items as possible before the time runs out. 3 star

  7. Excel Students are to load up a spreadsheet in excel. They then can enter in the correct number of coins to purchase several different items. This is a very simple yet powerful example. You may also have the students print this out

  8. Making Change. Nice site where students will have to give change on the computer and told if they are correct or not.

  9. Coins for Candy - Students identify, know the value of, and compare the values of a penny, nickel, and dime. (Author - Sandi King)

  10. Counting Coins - interactive learning exercises are designed to help your students learn and practice their coin counting skills. Create your own difficulty level based on your students' skill level and needs.

  11. Counting Money - Help Kristen, Ryan, or Evan with their shopping. Six pages of problems are available; three easy and three hard.

  12. Discovering Coin Values - a target amount is given and students drag coins to the slide to equal that amount [values over $1.00 used occasionally]  4 star

  13. Spending Spree game In this game students pick the item that you would like to buy and then choose the correct amount of coins you need to pay for that item. This game has 10 questions.

  14. Which Coin? - Students select the coin that completes the total needed.

  15. Interactive Clock Outstanding
  16. Teaching Time Outstanding site 4 star
  17. Telling Time Outstanding site 4 star
  18. Bang on Time Outstanding Site 4 star
  19. Stop the Clock 15 minute intervals
  20. Stop the Clock 5 minute intervals
  21. Stop the Clock 1 minute intervals
  22. Hickory Dickory Clock Find the right time for the mouse and the cheese
  23. Telling time Practice Move the hands to tell the time.
  24. Clock Works - Three different level of learning.
  25. The Difference between two times. - This link will is a gain both a word and a visual problem. 4 star
  26. Rock around the Clock - Music Video
  27. What is AM and What is PM - Music Video
  28. Telling Time Smart Board Lesson SB
  29. Telling time game Using smart board students will learn how to tell time. by Dan Hoffman SB
  30. Telling Time game Using smart board and Cryptic clock Smart board by Dan Hoffman SB
  31. A Matter of Time - interactive quizzes on half hour, 15 minute intervals and five minute intervals - (story problems)
  32. Analog Clock – (whole class activity) You call out a time and ask a student to set the clock
  33. Bedtime Bandits - (students try to stay up as late as possible by blasting killer clocks that drop from the ceiling) After each stage, identifying the correct clock gets harder and harder.
  34. ClockWise and Matching Time - select these two activities to practice telling time
  35. Tell Time - free worksheets from Math Slice, time intervals from 1 hour to one minutes
  36. Snapdragon - Tell the Time Try to make the hands on the clock match with the time the dragon gives. From BBC Education.
  37. Identifying Time It's a digital world, but it's still important to know how to tell time on a clock face! Test your clock reading skills here. Be sure to click the Next arrow to see all of the clock activities.
  38. What Time Is It game In this game students look at the analog clock and tell the time and then pick the digital clock that shows the same time. This game has 10 questions.


Represent and interpret data.
  1. Amblegraph This online tools lets you create simple bar charts in your web browser. Children can use it for very quick surveys or a teacher can use it to model the construction of a bar graph with a class or group. Most elements are editable.
  2. Virtual Bar Chart This virtual manipulative lets you create a bar graph right in your web browser. You can specify the number of columns and rows, label the items, and view totals or percentages.
  3. Create a simple bar graph
  • Open the spreadsheet to be seen by the entire class, or have individual students open it at their own computers.
  • The spreadsheet will allow the user to enter data and labels for up to 8 items, while dynamically updating the bar graph.
  • Begin by replacing the labels in the table with the words you want.
  • Next replace the data in the table with the values you want.
  • As you wish you can click on and change the "Chart" title, "Data" title, and "Labels" title in the graph.
  • This is a good way to generate a quick graph in class, or have younger children make graphs who are not as comfortable with Excel.
  1. Data analysis and Graphs You will find an outstanding and an exceptional lesson using Smart Board technology. SB Created by Kim Taylor



Reason with shapes and their attributes.

  1. Counter - Manipulative
  2. 3-D Boxes Calculate how many cubes you need to make the different 3D shapes shown with this Flash activity
  3. Shape Game What can you make? This website will allow students to move shapes around and create using their imagination. 4 Star
  4. Finding shapes on earth Travel to the planet.
  5. Twizzle A game using logic and geometry.
  6. Geometry tool box. This tool box will allow you to explore using a compass and ruler. It has many outstanding qualities that may be used for teaching students. If you have an LCD projector this website is for you. 4 Star
  7. Find the shapes In this game you will free the princes if you follow the directions for shapes
  8. Buried Shapes game In this online game the student has to identify 3-D shapes that as partially buried in the ground in colorful pictures
  9. Platonic Solids - Virtual Manipulative This online activity allows you to experiment with five platonic solids, counting their faces, edges, and vertices.
  10. Prisms, Pyramids, Cones, and Cylinders This web site uses pictures and clear explanations to teach about Prisms, Pyramids, Cones, and Cylinders. When done with the review, students can take an interactive quiz over what they learned.
  11. Three Dimensional Review This web site provides a good introduction (or review) of what a three-dimensional object is. After the review, students can take an interactive quiz where they distinguish between two- and three-dimensional objects.
  12. Tangram Puzzles In this online activity students can move around virtual tan gram pieces to try to combine them into one of the provided final shapes.
  13. Flash Video Geometric shapes with Tangrams 4 Star
  14. 2D shapes - identify and compare these shapes