Academic language : a foundation for academic success in mathematics / Margo Gottlieb and Gisela Ernst-Slavit -- CCSS for mathematics and related academic language. Grade 6: exploring ossibilities with geometric solids / Amanda Villagómez and Kerri J. Wenger. Grade 7: ratios and proportions in everyday life / Zandra de Araujo. Grade 8: are they similar or congruent? / Gladis Kersaint.