TEKS Math Task Cards for 6th Grade Math Centers: These 24 task cards are aligned with TEKS Standard 6.12B Center, Spread, and Shape. Several types of questions help you assess how well your students use the graphical representation of numeric data to describe the center, spread, and shape of the data distribution. 6.12B Use the graphical representation of numeric data to describe the center, spread, and shape of the data distribution.Task cards are great for a whole-class game, math centers/st