The objective of the lesson is to improve student's understanding of place value with regard to solving addition (with regrouping) and subtraction (with renaming) problems through a range of strategies so as to use student's individual strengths to fulfill their potential.
The lesson plan is based at a third grade level. Since it is necessary to know where the math skills fits within the continuum of learning, the California Standards - per the Mathematics Framework for California Public Schools - for number sense are presented.
The California Standards are available on-line at http://www.cde.ca.gov/board/pdf/math.pdf. In addition, the California Association of Resource Specialists and Special Education Teachers in association with other educational bodies developed the Goals and Objectives Handbook (http://www.carsplus.org/acsa-cars_publication.html) which has an array of sample goals and objectives for students with mild to moderate disabilities based on the essential standards.
· Traditional worksheets are available in numerous teacher text/student workbooks and at various websites, such as http://www.mathsphere.co.uk/teacher/welcome.htm (select N.S. Yr. 2 Pg. 41 Adding or subtracting crossing the tens) and http://www.mathfactcafe.com/javamfc/jsp/opensheet.jsp?grade=3&file=p_s_regrpa&type=P (regrouping/borrowing #1).
· Practical activities
http://explorer.scrtec.org/explorer-db/browse/static/Mathematics/index.html offers a wide range of math activities across various grade levels. Tricky triangles (http://explorer.scrtec.org/explorer/explorer-db/rsrc/823932082-81ED7D4C.2.PDF), Column Addition Game (http://explorer.scrtec.org/explorer/explorer-db/rsrc/817016178-81ED7D4C.2.PDF) and other such activities offer tactile, practical activities.
· Assistive technology:
This Base Ten Block website http://illuminations.nctm.org/swr/review.asp?SWR=120 consists of a Java applet, where one can select any combination of three different blocks (representing a unit, 10 units and 100 units) and drag them into a working panel. Students can then move, rotate, break, and glue the blocks to explore base 10 place value.
Additional activities (as taken from Bay Area Math Project training, Summer 2002) which include information (i) regarding mathematical background, (ii) relating the mathematics to children's learning, and (iii) extending ideas are also presented. These include supplementary and challenging activities.
Further information regarding instructional strategies may be found in Mathematics Framework for California Public Schools (pp. 178 --193).
Meese, R. L. (2001). Teaching Learners with Mild Disabilities Integrating research and practice (second edition). Belmont, CA. Wadsworth/Thomson Learning, Inc.
Mathematics Framework for California Public Schools -- Kindergarten through Grade Twelve (2000). California Department of Education. Sacramento.
http://www.cde.ca.gov/board/pdf/math.pdf - Mathematics content Standards for California Public Schools -- Kindergarten through Grade Twelve
http://www.carsplus.org/acsa-cars_publication.html - ACSA and CARS+ Handbook on Goals and Objectives Related to Essential State of California Content Standards is now available for download standards.