This post explains and gives practice opportunities related to TEKS 8.12A: solve real-world problems comparing how interest rate and loan length affect the cost of credit Instruction Students compare interest rates and their effects on total loan cost. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 4 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here . The vid

This post explains and gives practice opportunities related to TEKS 8.11B: determine the mean absolute deviation and use this quantity as a measure of the average distance data are from the mean using a data set of no more than 10 data points Instruction Students explore absolute mean deviation and how to calculate it. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 3 times on the STAAR test. Videos explaining the problems can be found below. If

This post explains and gives practice opportunities related to TEKS 8.11A: construct a scatterplot and describe the observed data to address questions of association such as linear, non-linear, and no association between bivariate data Instruction Students learn to differentiate between patterns found on scatterplots. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 6 times on the STAAR test. Videos explaining the pr

This post explains and gives practice opportunities related to TEKS 8.10D: model the effect on linear and area measurements of dilated two-dimensional shapes Instruction Students learn how dilations affect measurements of geometric shapes. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 5 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, cli

This post explains and gives practice opportunities related to TEKS 8.10C: explain the effect of translations, reflections over the x- or y- axis, and rotations limited to 90°, 180°, 270°, and 360° as applied to two-dimensional shapes on a coordinate plane using an algebraic representation Instruction Students learn how to algebraically represent various transformations on the coordinate plane. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness

This post explains and gives practice opportunities related to TEKS 8.10B: differentiate between transformations that preserve congruence and those that do not Instruction Students learn that dilations do not preserve congruence while other transformations do. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 5 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here .

This post explains and gives practice opportunities related to TEKS 8.10A: generalize the properties of orientation and congruence of rotations, reflections, translations, and dilations of two-dimensional shapes on a coordinate plane Instruction Students learn that no matter how you transform a shape, the side lengths, area, and angle measures do not change. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 6 times on

This post explains and gives practice opportunities related to TEKS 8.9A: identify and verify the values of x and y that simultaneously satisfy two linear equations in the form y = mx + b from the intersections of the graphed equations Instruction Students learn how values that satisfy two equations intersect on a graph. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 6 times on the STAAR test. Videos explaining the

This post explains and gives practice opportunities related to TEKS 8.8D: use informal arguments to establish facts about the angle sum and exterior angle of triangles, the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles Instruction Students learn basics of geometrics proofs, starting with angles created by parallel lines cut by a transversal and complementary and supplementary angles. STAAR Practice Betwe

This post explains and gives practice opportunities related to TEKS 8.8C: model and solve one-variable equations with variables on both sides of the equal sign that represent mathematical and real-world problems using rational number coefficients and constants Instruction Students learn to represent and solve equations with variables on both sides of the equal sign. Here are some activities you can use to teach this standard. STAAR Practice Between 2016 and 2025 (including r

This post explains and gives practice opportunities related to TEKS 8.8B: write a corresponding real-world problem when given a one-variable equation or inequality with variables on both sides of the equal sign using rational number coefficients and constants Instruction Students learn take an equation or inequality and turn it into a word problem. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 4 times on the STAAR

This post explains and gives practice opportunities related to TEKS 8.8A: write one-variable equations or inequalities with variables on both sides that represent problems using rational number coefficients and constants Instruction Students learn how to take real-world situations and turn them into algebraic expressions and equations. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 8 times on the STAAR test. Videos explaining the problems can b

This post explains and gives practice opportunities related to TEKS 8.7D: determine the distance between two points on a coordinate plane using the Pythagorean Theorem Instruction Students apply their knowledge of the Pythagorean theorem to find distances on the coordinate plane. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 7 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these que

This post explains and gives practice opportunities related to TEKS 8.7C: use the Pythagorean Theorem and its converse to solve problems Instruction Students use the Pythagorean theorem to solve problems involving right triangles. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness standard has been tested 18 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here .

This post explains and gives practice opportunities related to TEKS 8.7B: use previous knowledge of surface area to make connections to the formulas for lateral and total surface area and determine solutions for problems involving rectangular prisms, triangular prisms, and cylinders Instruction Students learn to differentiate between the lateral surface area (surface area without bases) and the total surface area of prisms and cylinders. STAAR Practice Between 2016 and 2025 (

This post explains and gives practice opportunities related to TEKS 8.7A: solve problems involving the volume of cylinders, cones, and spheres Instruction Students extend their knowledge of volume to solve problems involving cones, cylinders, and spheres. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness standard has been tested 21 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over thes

This post explains and gives practice opportunities related to TEKS 8.6C: use models and diagrams to explain the Pythagorean theorem Instruction Students use squares and representations to derive and explain the Pythagorean theorem. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 6 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click h er

This post explains and gives practice opportunities related to TEKS 8.6A: describe the volume formula V = Bh of a cylinder in terms of its base area and its height Instruction Students learn how to use the dimensions of a cylinder to describe the formula for its volume. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 9 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, cl

This post explains and gives practice opportunities related to TEKS 8.5I: write an equation in the form y = mx + b to model a linear relationship between two quantities using verbal, numerical, tabular, and graphical representations Instruction Students learn to model slope-intercept form in problems, tables, and graphs. Here are some activities you can use to teach this standard. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness standard has

This post explains and gives practice opportunities related to TEKS 8.5H: identify examples of proportional and non-proportional functions that arise from mathematical and real-world problems Instruction Students learn to identify real-world situations in which proportional and non-proportional functions exist. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 7 times on the STAAR test. Videos explaining the problems