Relating addition and subtraction and playing the game BUMP; counting down. Relating addition and subtraction and playing the game BUMP; Working with numbers, starting with a number and counting down ...

Students practice addition and subtraction problems without regrouping. In this lesson, students practice addition and subtraction problems without regrouping using base-10 block manipulatives and ...

1 Centre of Excellence in Mathematics, CHE, Bangkok, Thailand. 2 Center for Research in Mathematics Education, Faculty of Education, Khon Kaen University, Khon Kaen, Thailand. The researcher collected ...

ABSTRACT: This study aimed to analyzeboundaries of the community of teachers’ imple-menting the mathematics textbooks with Lesson Study and Open Approach.For this study, Mathematics textbooks were ...

Teachers can use these tools to promote discussions and help students move from concrete to abstract understanding of concepts.

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