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Khan Academy’s mission is to provide a “free world-class education for anyone anywhere”. Khan Academy offers a multitude of videos and skill exercises that that aligned to the Common Core standards. Students can learn, practice, and master skills while receiving immediate feedback, and teachers can ‘coach’ their students and recommend skills and exercises to pursue. Some exercises offer similar ‘drag and drop’ answer formats to those seen on PARCC sample items, and students can practice doing math digitally using the scratchpad and attending to appropriate answer formats. Many exercises include interactive portions and/or virtual manipulatives.
This is a great Common Core aligned resource that is a virtually complete curriculum complete with teacher guides, student handouts and worksheets, and much more!
This site is a linear programming grapher/solver. It allows you to input your constraints, maximize/minimize with respect to an objective function if desired, and graphs the feasible region. It also provides a table with vertices of the feasible region, the lines that pass through each vertex as a system of equations, and the value of the objective function at that vertex. This could serve as a tool for students and teachers to create linear programming problems/projects, or to check and verify one's own work and solutions.
This resource is an effort to develop a free online interactive math textbook that leverages interactivity and animations to engage students. At the present time the site is focused on Geometry content. Of particular note are the numerous animations to support learning geometric constructions.
This resource has a variety of calculators and solvers that help with a variety of topics, including algebra (polynomials, quadratics, systems of equations, etc.), geometry, matrices, trigonometry, calculus, statistics, and finance.
This resource offers tools to manipulate matrices and solve matrix equations, including solving systems of linear equations, inverses, row operations, transforming to row echelon form or reduced row echelon form, determinants, and more. Another great resource for basic matrix operations like adding, subtracting, multiplying, and solving systems of equations is here.
This site offers great simulations for mathematics and science that are interactive, research-based, and fun! Java is still required to run some of their simulations, but their HTML5 simulations run in a browser on any device, including iPads, smart phones, and tablets.
This website is a web-based resource that can help students explore geometric constructions, transformations, and tessellations. The visuals are amazing, but the entry of commands takes a little bit of practice, so viewing some of their examples is recommended. You can directly access the web-based app here.
Xuru's Website - Web-based Regressions and Statistics Resources
This site provides a clean and simple interface for teachers and students to perform a variety of regressions. The site can perform linear regressions (LR), logarithmic regressions (LnR), exponential regressions (ExpR), power regressions (PowR), quadratic/polynomial regressions (PR), and multiple linear/polynomial regressions simultaneously as well as nonlinear regressions (NLR). This site has a better user interface than most that I have seen. Additionally, on the same site, users can obtain descriptive statistics for a set of data.
Wolfram Alpha - Computational Knowledge Engine
This website is not a search engine - it is a knowledge engine. Given an input, it will display fact-based or calculated information related to the query. It understands mathematical input as well, and is available as a paid app on iOS devices. Try the following queries to see how this resource functions: "Mount Rushmore" or "length of curve y=x^2 from x=-2 to x=5"
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