The 2024 8th Grade Math STAAR continued both statewide online testing and several new item types. Using a modified version of the...

This post explores some ideas for reviewing concepts for TEKS 8.5I. write an equation in the form y = mx + b to model a linear...

This post explores some ideas for reviewing concepts for TEKS 8.8C. model and solve one-variable equations with variables on both sides...

The 2023 8th Grade Math STAAR introduced statewide online testing and several new item types. Using a modified version of the statewide...

This post explains and gives practice opportunities related to TEKS 8.12G: estimate the cost of a two-year and four-year college education, including family contribution, and devise a periodic savings plan for accumulating the money needed to contribute to the total cost of attendance for at least the first year of college Instruction Students build on their previous knowledge of saving for college and use it to calculate the cost needed for multiple years of attendance. STAA

This post explains and give practice opportunities related to TEKS 8.12E analyze situations to determine if they represent financially...

This post explains and give practice opportunities related to TEKS 8.12E identify and explain the advantages and disadvantages of...

This post explains and gives practice opportunities related to TEKS 8.12D: calculate and compare simple interest and compound interest earnings Instruction Students learn how to calculate different kinds of interest and compare how they affect amounts. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness standard has been tested 20 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these q

This post explains and gives practice opportunities related to TEKS 8.12C explain how small amounts of money invested regularly, including money saved for college and retirement, grow over time Instruction Students learn how interest helps money increase over long periods of time. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 2 times on the STAAR test. The 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 8.12A: 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