Using descriptions from popular textbooks, the authors share the importance of introducing the definition so students can make sense of reflections both on and off the coordinate grid.
Supplementary Materials
Distance Stays The Same Animation (Data File 18.8 KB)
Burger, Edward B.,
Juli K.Dixon,
Timothy D.Kanold,
Matthew R.Larson,
Steven J.Leinwand, and Martha E.Sandoval-Martinez. 2014. Go Math!: Middle School Accelerated Grade 7.Orlando, FL: Houghton Mifflin Harcourt.
Burger, Edward B.,
Juli K.Dixon,
Timothy D.Kanold,
Matthew R.Larson,
Steven J.Leinwand, and Martha E.Sandoval-Martinez. 2014. Go Math!: Middle School Accelerated Grade 7.Orlando, FL: Houghton Mifflin Harcourt.)| false
Lappan, Glenda,
Elizabeth DifanisPhillips,
James T.Fey, and Susan N.Friel. 2018a. Butterflies, Pinwheels, and Wallpaper: Symmetry and Transformations, Connected Mathematics 3. Boston, MA: Pearson Education.
Lappan, Glenda,
Elizabeth DifanisPhillips,
James T.Fey, and Susan N.Friel. 2018a. Butterflies, Pinwheels, and Wallpaper: Symmetry and Transformations, Connected Mathematics 3. Boston, MA: Pearson Education.)| false
Lappan, Glenda,
Elizabeth DifanisPhillips,
James T.Fey, and Susan N.Friel. 2018b. Butterflies, Pinwheels, and Wallpaper: Symmetry and Transformations, Teacher’s Guide Connected Mathematics 3. Boston MA: Pearson Education.
Lappan, Glenda,
Elizabeth DifanisPhillips,
James T.Fey, and Susan N.Friel. 2018b. Butterflies, Pinwheels, and Wallpaper: Symmetry and Transformations, Teacher’s Guide Connected Mathematics 3. Boston MA: Pearson Education.)| false
National Governors Association Center for Best Practices (NGA Center) and Council of Chief State School Officers (CCSSO).2010. Common Core State Standards for Mathematics. Washington, DC: NGA Center and CCSSO. http://www.corestandards.org.
National Governors Association Center for Best Practices (NGA Center) and Council of Chief State School Officers (CCSSO).2010. Common Core State Standards for Mathematics. Washington, DC: NGA Center and CCSSO. http://www.corestandards.org.)| false
Open Up Resources. n.d. Open Up Resources 6–8 Math. https://access.openupresources.org/curricula/our6-8math/en/grade-8/unit-1/lesson-2/teacher.html.)| false
Stacey, Kaye,
BethPrice,
EugeneGvozdenko, and VickiSteinle. 2013. Specific Mathematics Assessments That Reveal Thinking. www.smartvic.com/teacher.
Stacey, Kaye,
BethPrice,
EugeneGvozdenko, and VickiSteinle. 2013. Specific Mathematics Assessments That Reveal Thinking. www.smartvic.com/teacher.)| false
Teuscher, Dawn, and LisaKasmer. 2016. “Isometries in New US Middle Grades Textbooks: How Are Isometries and Congruence Related?” Thirteenth International Congress on Mathematical Education, Hamburg, Germany, July 24–31, 2016.
Teuscher, Dawn, and LisaKasmer. 2016. “Isometries in New US Middle Grades Textbooks: How Are Isometries and Congruence Related?” Thirteenth International Congress on Mathematical Education, Hamburg, Germany, July 24–31, 2016.)| false
Teuscher, Dawn,
DungTran, and Barbara J.Reys. 2015. “Common Core State Standards in the Middle Grades: What’s New in the Geometry Domain and How Can Teachers Support Student Learning?” School Science and Mathematics115, no. 1: 4–13.
Teuscher, Dawn,
DungTran, and Barbara J.Reys. 2015. “Common Core State Standards in the Middle Grades: What’s New in the Geometry Domain and How Can Teachers Support Student Learning?” School Science and Mathematics115, no. 1: 4–13.10.1111/ssm.12096)| false