# Search Standards

Standard Name STAAR Student Expectation
7.8.B make a net (two-dimensional model) of the surface area of a three-dimensional figure; and
7.8.C use geometric concepts and properties to solve problems in fields such as art and architecture.
7.9.A estimate measurements and solve application problems involving length (including perimeter and circumference) and area of polygons and other shapes;
7.9.B connect models for volume of prisms (triangular and rectangular) and cylinders to formulas of prisms (triangular and rectangular) and cylinders; and
7.9.C estimate measurements and solve application problems involving volume of prisms (rectangular and triangular) and cylinders.
7.10.A construct sample spaces for simple or composite experiments; and
7.10.B find the probability of independent events.
7.11.A select and use an appropriate representation for presenting and displaying relationships among collected data, including line plot, line graph, bar graph, stem and leaf plot, circle graph, and Venn diagrams, and justify the selection; and
7.11.B make inferences and convincing arguments based on an analysis of given or collected data.
7.12.A describe a set of data using mean, median, mode, and range; and
7.12.B choose among mean, median, mode, or range to describe a set of data and justify the choice for a particular situation.
7.13.A identify and apply mathematics to everyday experiences, to activities in and outside of school, with other disciplines, and with other mathematical topics;
7.13.B use a problem-solving model that incorporates understanding the problem, making a plan, carrying out the plan, and evaluating the solution for reasonableness;
7.13.C select or develop an appropriate problem-solving strategy from a variety of different types, including drawing a picture, looking for a pattern, systematic guessing and checking, acting it out, making a table, working a simpler problem, or working backwards to solve a problem; and
7.13.D select tools such as real objects, manipulatives, paper/pencil, and technology or techniques such as mental math, estimation, and number sense to solve problems.
7.14.A communicate mathematical ideas using language, efficient tools, appropriate units, and graphical, numerical, physical, or algebraic mathematical models; and
7.14.B evaluate the effectiveness of different representations to communicate ideas.
7.15.A make conjectures from patterns or sets of examples and nonexamples; and
7.15.B validate his/her conclusions using mathematical properties and relationships.
8.1.A compare and order rational numbers in various forms including integers, percents, and positive and negative fractions and decimals;
8.1.B select and use appropriate forms of rational numbers to solve real-life problems including those involving proportional relationships;
8.1.C approximate (mentally and with calculators) the value of irrational numbers as they arise from problem situations (such as pi, square root of 2); and
8.1.D express numbers in scientific notation, including negative exponents, in appropriate problem situations.
8.2.A select appropriate operations to solve problems involving rational numbers and justify the selections;
Resource ID Author Select Subject(s) Grade Title
M8M1L5bS2 msheppard Mathematics 8

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### Converting Among Different Representations of Rational Numbers

This interactive provides a review of converting among different forms of rational numbers.

8.2.B use appropriate operations to solve problems involving rational numbers in problem situations;
8.2.C evaluate a solution for reasonableness; and
8.2.D use multiplication by a constant factor (unit rate) to represent proportional relationships.
8.3.A compare and contrast proportional and non-proportional linear relationships; and
8.3.B estimate and find solutions to application problems involving percents and other proportional relationships such as similarity and rates.
8.4.A The student is expected to generate a different representation of data given another representation of data (such as a table, graph, equation, or verbal description).
8.5.A predict, find, and justify solutions to application problems using appropriate tables, graphs, and algebraic equations; and
8.5.B find and evaluate an algebraic expression to determine any term in an arithmetic sequence (with a constant rate of change).
8.6.A generate similar figures using dilations including enlargements and reductions; and
8.6.B graph dilations, reflections, and translations on a coordinate plane.
Resource ID Author Select Subject(s) Grade Title
TEKS12_MATH_08_001 bgraham Mathematics 8

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### Dilations

These activities provide an opportunity for students to explore dilations both on and off of a coordinate plane.

8.7.A draw three-dimensional figures from different perspectives;
8.7.B use geometric concepts and properties to solve problems in fields such as art and architecture;
8.7.C use pictures or models to demonstrate the Pythagorean Theorem; and
8.7.D locate and name points on a coordinate plane using ordered pairs of rational numbers.
8.8.A find lateral and total surface area of prisms, pyramids, and cylinders using concrete models and nets (two-dimensional models);
8.8.B connect models of prisms, cylinders, pyramids, spheres, and cones to formulas for volume of these objects; and
8.8.C estimate measurements and use formulas to solve application problems involving lateral and total surface area and volume.
8.9.A use the Pythagorean Theorem to solve real-life problems; and
8.9.B use proportional relationships in similar two-dimensional figures or similar three-dimensional figures to find missing measurements.
8.10.A describe the resulting effects on perimeter and area when dimensions of a shape are changed proportionally; and
8.10.B describe the resulting effect on volume when dimensions of a solid are changed proportionally.
8.11.A find the probabilities of dependent and independent events;
8.11.B use theoretical probabilities and experimental results to make predictions and decisions; and
C select and use different models to simulate an event.
8.12.A select the appropriate measure of central tendency or range to describe a set of data and justify the choice for a particular situation;
8.12.B draw conclusions and make predictions by analyzing trends in scatterplots; and