In this video from Odd Squad, Olive and Otto must find some Shmumbertonium for a scientist to return to the real world. Olive remembers that there was a Shmumbertonium factory halfway through the comic book. But exactly how far away is halfway?
Learn about addition, subtraction, and making amounts equal with the Odd Squad. When Ms. O and O'Donahue visit the Mathroom, she is excited to see her old friend and help with the case.
Learn about addition in this fun clip from the Odd Squad. Agent Otto joins Soundcheck for their new hit song, "Gonna Add One".
Learn about addition with the Odd Squad. Most of the missing Oscarbots have been found in places that have their corresponding numbers. Oscar, Olive and Otto are still looking for Oscarbots 4 and 8. When Oscar mentions that 4 and 8 love being together, that gives Olive an idea about where the missing Oscarbots might be.
Learn about addition and subtraction in this fun clip from the Odd Squad. Otto's favorite band has a new song, "Take Away Four."
Learn about doubling numbers with the Odd Squad. While babysitting the doubled Debbies, Otto discovers something that might help Olive crack the case and find the missing double.
Olive and Otto use counters to figure out how many objects are being taken away in a visit to the Mathroom.
This task acts as a bridge between understanding place value and using strategies based on place value for addition and subtraction.
A list of suggested activities for addressing CCSS 2.OA.C.4 where students work with arrays and repeated addition. Includes a problem for a 3X5 array and its solution in a video. [8:23]
This short video and interactive assessment activity is designed to teach second graders an overview of addition (sums to 100) - word problems.
This short video and interactive assessment activity is designed to teach first graders an overview of subtraction (numbers to 100).
These word problems represent the "Add To" contexts for addition and subtraction.
An interactive simulation that teaches about place value, addition, and subtraction by adding, breaking apart, and combining numbers by making tens and focusing on place value. This simulation can either be downloaded or played online and includes handouts, lesson plans, and additional materials.
The purpose of this task is for students to select 2 numbers from a set of 3 that sum to 9. The task can be completed for sums equaling any number. Teachers may choose to ask students to write the simple equations they select.
Practice adding and subtracting within one hundred with these multiple-choice problems.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Practice adding and subtracting within one hundred with these multiple-choice problems.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Gain an understanding of how to add and subtract integers by viewing examples and a video lesson. [0:56]
In this challenging instructional task students relate addition and subtraction problems to money and to situations and goals related to saving money.
This word problem may be used for instructional or assessment purposes, depending on where students are in their understanding of addition and how the teacher supports them.
The purpose of this task is for students to select 2 numbers from a set that sum to 5 (or any other number).