Unknown Facts
Grade Level: 2
Standards:
(2.OA.A.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.
(2.L.5.) Demonstrate understanding of word relationships and nuances in word meanings.
Objective: Students will be able to use addition and subtraction to solve equations using unknowns by writing them on their flashcards page.
Procedures:
- The teacher will present an example problem to the whole group for the class to complete.
- Once students have grasped the concept, other centers will be explained.
- For this center, students will begin by using class tablets to scan the QR Code from card one. They will transfer the objective from that card onto their page.
- Students will repeat the process, transferring the story problem into equation form and solving.
Assessments:
Formative: The teacher will have 1-2 example problems at hand. As a whole group, students will work through the problems on their whiteboards. When completed, students will hold the board facing their chest. Once the teacher sees that the majority of the class is finished, she will prompt them to flip their boards in her direction so she can check for understanding.
Summative: As students are completing the center activity, they will complete their flashcard page. This page will include the lesson objective on card 1 and also each problem transferred into equation form from story problem form.
Conclusion:
This lesson was created with the purpose of being a math center used in second grade. Students will enjoy the level of hands-on activity that is involved through the scanning and writing of each problem. This activity will work even if the classroom only has access to 1 tablet, as students can take turns scanning (all will have to write the problems down on their own page). This will be a different and engaging activity for all students.
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