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A special version of the Desmos online graphing calculator is included as part of the BlueBook app students use to take the SAT. Clever use of Desmos on the SAT math section can give a significant boost to scores, but Desmos is as complicated as it is powerful, and many students are unaware of its most helpful features.  Which Desmos skills are most important to master for use on the SAT? Narrowing the list is critical. Click here to read my outline of Desmos ess entials. The calculator is no cure-all, however, and the boundaries of its usefulness on the SAT must be kept firmly in mind. Desmos is helpful in solving the following types of problems: basic calculation, and simple data analysis, solving equations and systems, finding intercepts/zeros/max-min values, graphing equations and functions, and finding points along these curve. During the test, students should keep the calculator open but minimized, expanding it when in use. Desmos is growing in importance in most high schoo...

A special version of the Desmos online graphing calculator is included as part of the BlueBook app students use to take the SAT. Clever use of Desmos on the SAT math section can give a significant boost to scores, but Desmos is as complicated as it is powerful, and many students are unaware of its most helpful features.  Which Desmos skills are most important to master for use on the SAT? Narrowing the list is critical. Click here to read my outline of Desmos ess entials. The calculator is no cure-all, however, and the boundaries of its usefulness on the SAT must be kept firmly in mind. Desmos is helpful in solving the following types of problems: basic calculation, and simple data analysis, solving equations and systems, finding intercepts/zeros/max-min values, graphing equations and functions, and finding points along these curve. During the test, students should keep the calculator open but minimized, expanding it when in use. Desmos is growing in importance in most high schoo...

A special version of the Desmos online graphing calculator is included as part of the BlueBook app students use to take the SAT. Clever use of Desmos on the SAT math section can give a significant boost to scores, but Desmos is as complicated as it is powerful, and many students are unaware of its most helpful features.  Which Desmos skills are most important to master for use on the SAT? Narrowing the list is critical. Click here to read my outline of Desmos ess entials. The calculator is no cure-all, however, and the boundaries of its usefulness on the SAT must be kept firmly in mind. Desmos is helpful in solving the following types of problems: basic calculation, and simple data analysis, solving equations and systems, finding intercepts/zeros/max-min values, graphing equations and functions, and finding points along these curve. During the test, students should keep the calculator open but minimized, expanding it when in use. Desmos is growing in importance in most high schoo...

For many students, SAT problems requiring interpretation of details found in equations or graphs can be some of the most difficult.  These questions are simply unanswerable without a basic understanding of the particular mathematical models tested on the SAT. Fortunately, firm grounding in those aspects of linear, quadratic, and exponential functions tested on the SAT isn't hard to obtain. Following are key facts about linear, quadratic, and exponential models students must understand to answer SAT interpretation questions. - Linear functions y = mx+b: y-intercept b is the “initial value” (y value when x = 0). Slope is the “rate of change” (y compared to x, “y per x”). Quadratic functions y = ax^2+bx+c: y-intercept c is the “initial value” (y value when x = 0). max/min value is the y coordinate at the vertex. Exponential functions y = A*B^x. x is usually time, t. A is the initial value (y value when x or t = 0). B is the “multiplier” (number repeatedly multiplied in the problem. B ...

For many students, SAT problems requiring interpretation of details found in equations or graphs can be some of the most difficult.  These questions are simply unanswerable without a basic understanding of the particular mathematical models tested on the SAT. Fortunately, firm grounding in those aspects of linear, quadratic, and exponential functions tested on the SAT isn't hard to obtain. Following are key facts about linear, quadratic, and exponential models students must understand to answer SAT interpretation questions. - Linear functions y = mx+b: y-intercept b is the “initial value” (y value when x = 0). Slope is the “rate of change” (y compared to x, “y per x”). Quadratic functions y = ax^2+bx+c: y-intercept c is the “initial value” (y value when x = 0). max/min value is the y coordinate at the vertex. Exponential functions y = A*B^x. x is usually time, t. A is the initial value (y value when x or t = 0). B is the “multiplier” (number repeatedly multiplied in the problem. B ...

For many students, SAT problems requiring interpretation of details found in equations or graphs can be some of the most difficult.  These questions are simply unanswerable without a basic understanding of the particular mathematical models tested on the SAT. Fortunately, firm grounding in those aspects of linear, quadratic, and exponential functions tested on the SAT isn't hard to obtain. Following are key facts about linear, quadratic, and exponential models students must understand to answer SAT interpretation questions. - Linear functions y = mx+b: y-intercept b is the “initial value” (y value when x = 0). Slope is the “rate of change” (y compared to x, “y per x”). Quadratic functions y = ax^2+bx+c: y-intercept c is the “initial value” (y value when x = 0). max/min value is the y coordinate at the vertex. Exponential functions y = A*B^x. x is usually time, t. A is the initial value (y value when x or t = 0). B is the “multiplier” (number repeatedly multiplied in the problem. B ...