Techlessons - Eighth Grade
Math - Expressions, Equations, and Functions
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Today is: Monday,01 December,2008 03:34:15 PM

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8th Grade

Graphing Calculator Introduction
Graphing Calculators:  Graphing a Line United Streaming Video (must login and scroll down to highlighted video segment)
Misc.
Evaluating Expressions with One Variable (scroll down to the practice section)
Evaluating Expressions with Two Variables (scroll down to the practice section)
Planet Blaster Basics - Practice your math and defend your planet!  (Addition, Subtraction, Multiplication, and Division)
Algebra Four - Students play a generalized version of connect four, gaining the chance to place a piece on the board by solving an algebraic equation. Parameters: Level of difficulty of equations to solve and type of problem
Algebra Quiz - Similar to Algebra Four, Algebra Quiz gives the user randomized questions to answer on solving algebraic linear and quadratic equations of one variable. Parameters: Level of difficulty and types of questions
Conic Flyer - Allows the manipulation of the constants and coefficients of all the types of conic section equations on a coordinate plane by changing those numbers using a slider bar.
Data Flyer - Similar to Function Flyer, but with the capability of plotting data points as well as a function. Then you can tweak the function to fit the data.
Function Flyer - A more advanced version of Slope Slider, this activity allows the manipulation of the constants and coefficients in any function thereby encouraging the user to explore the effects on the graph of the function by changing those numbers.
Function Machine - Students investigate very simple functions by trying to guess the algebraic form from inputs and outputs.
Graph Sketcher - Students can create graphs of functions by entering formulas -- similar to a graphing calculator
Linear Function Machine - Students investigate linear functions by trying to guess the slope and intercept from inputs and outputs.
Two Variable Function Pump - Students enter two complex numbers (z and c) as ordered pairs of real numbers, then click a button to iterate step by step. The iterates are graphed in the x-y plane and printed out in table form. This is an introduction to the idea of prisoners/escapees in iterated functions and the calculation of fractal Julia sets.
Whole Number Cruncher - Similar to "Number Cruncher" but only generates multiplication and addition functions to avoid outputting any negative numbers.