**Recent updates** (To report bugs or issues, or to make suggestions, click on "Webmaster" near the top of the page): |

April 30 2024: Updated three-part tutorial on linear functions and models with an adaptive game version |

Dec 30 2023: New summary of systems of linear equations with randomizable interactive examples. |

Dec 3 2023: New two-part tutorial on functions of several variables from the numerical, algebraic, and graphical viewpoints, with an adaptive game version |

Nov 23 2023: Practice and visualize: Reading graphs of functions of two variables (once there, click on "All modules" for more like this.) |

Oct 1 2023: Updated two-part tutorial on functions and models with an adaptive game version |

Aug 27 2023: Updated tutorial on permutations and combinations with an adaptive game version |

July 23 2023: Updated tutorial on the addition and multiplication principles and decision algorithms with an adaptive game version |

June 18 2023: Updated grapher (accepts functions with restricted domains and shows the corresponding graph endpoints, and has other other new features). |

May 7 2023: New tutorial on logistic and logarithmic functions (includes an adaptive game version). |

Feb 23 2023: New tutorial on scaled and shifted functions with an adaptive game version |

Jan 30 2023: Practice and visualize: Visualizing scaled functions (once there, click on "All modules" for more like this.) |

Jan 30 2023: Practice and visualize: Visualizing shifted functions (once there, click on "All modules" for more like this.) |

Jan 17 2023: New tutorial on trigonometric functions and models with an adaptive game version |

Aug 29 2022: Updated tutorial on related rates with an adaptive game version |

Aug 18 2022: Updated tutorial on solving polynomial equations (parts A and B). |

May 26 2022: Updated tutorial on the simplex method for standard maximization problems (now has two parts with an adaptive game version). |

March 25 2022: Updated tutorial on multiplying and factoring algebraic equations (Parts A, B, C) (includes an adaptive game version). |

March 25 2022: Updated tutorial on multiplying and factoring algebraic equations (Parts A, B, C) (includes an adaptive game version). |

March 7 2022: Updated tutorial on analyzing graphs (includes an adaptive game version). |

Jan 13 2022: Updated tutorial on derivatives of logs and exponentials (includes an adaptive game version). |

July 10 2021: Updated tutorial on maxima and minima (includes an adaptive game version). |

February 27 2021: Updated tutorial on exponential functions (includes an adaptive game version). |

February 27 2021: New tutorial on the number *e* and exponential growth and decay (includes an adaptive game version). |

January 2 2021: Updated tutorial on multiplying and factoring algebraic equations (Part A) (includes an adaptive game version). |

July 20 2020: New tutorial on Bernoulli trials and binomial random variables (includes an adaptive game version). |

July 5 2020: New tutorial on logarithms (includes an adaptive game version). |

June 1 2020: New tutorial on positive exponent, power, and simplest radical form (includes an adaptive game version). |

April 6 2020: New tutorial on the chain rule using Liebniz notation (includes an adaptive game version). |

October 29 2019: New tutorial on the chain rule (includes an adaptive game version). |

October 6 2019: New tutorial on radicals and rational exponents (includes an adaptive game version). |

September 26 2019: New tutorial on the cardinality of sets (includes an adaptive game version). |

September 11 2019: New tutorial on the product and quotient rule (includes an adaptive game version). |

June 30 2019: New tutorial on integer exponents (includes an adaptive game version). |

Februrary 23 2019: New tutorial on derivatives of powers, sums, and constant multiples (includes an adaptive game version). |

Februrary 11 2019: New tutorial on real numbers and operations (includes an adaptive game version). |

January 8 2019: New tutorial on sets and set operations (includes an adaptive game version and a Spanish version). |

October 25 2018: New summary of techniques of differentiation with randomizable interactive examples. |

August 16 2018: Updated version of the tutorial on calculating the derivative algebraically (includes an adaptive game version and a Spanish version). |

April 29 2018: New summary of average rates of change and introduction to the derivative with randomizable interactive examples. |

March 11 2018: Updated version of the tutorial on functions from the numerical, algebraic, and graphical viewpoints (includes an adaptive game version and a Spanish version). |

December 9 2017: Updated version of the tutorial on random variables and distributions (includes a game version and a Spanish version). |

Nov 30 2017: Implicit curve plotting added to the function evaluator and grapher |

October 31 2017: New interactive and randomizable review exercises on mathematics of finance |

October 28 2017: New version of the Pivot and Gauss-Jordan tool |

October 12 2017: New version of the simplex method tool (includes integer programming) |

October 8 2017: New version of the surface graphing utility, includes explicit, implicit, and parametric surfaces |

September 19 2017: New summaries of limits and continuous functions with randomizable interactive examples. |

September 11 2017: New tutorial on solving miscellaneous equations. |

September 8 2017: Updated version of the tutorial on quadratic functions and models (includes a game version and a Spanish version). |

June 18 2017: New interactive and randomizable review exercises on linear programming |

May 24 2017: Parametric plotting added to the function evaluator and grapher |

March 16 2017: New version of function evaluator and grapher |

March 7 2017: New tutorial on areas between curves (includes a game version and a Spanish version). |

Feb 24 2017: New version of the algebra review tutorial on solving polynomial equations (includes an adaptive game version and a Spanish version). |

January 27 2017: Updated version of the tutorial on matrix inverses (includes an adaptive game version and a Spanish version). |

October 22 2016: Updated version of the tutorial on graphical solution of linear programming problems (includes an adaptive game version and a Spanish version). |

October 21 2016: New summary of math of finance with randomizable interactive examples. |

August 14 2016: New tutorial on graphing linear inequalities (includes a game version and a Spanish version). |

July 31 2016: New version of the algebra review tutorial on rational expressions added (includes an adaptive game version and a Spanish version). |

July 6 2016: New summary of nonlinear functions and models with randomizable interactive examples. |

April 21 2016: New version of tutorial on related rates (includes a game version and a Spanish version). |

April 15 2016: New summary of functions and applications with randomizable interactive examples. |

March 9 2016: New interactive and randomizable review exercises on functions and applications |