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Physics Classroom is making strides to make our site accessible to everyone. Our site contains 6 navigation areas. The Primary, Secondary, and Page Level navigations have a screen reader version of their nav structure that allows using the left and right keys to navigate sibling navigation items, and up or down keys to navigate parent or child navigation items. The others can be navigated using tabs. The Primary Navigation handles the first 2 levels of site pages. The Secondary (which is not always available) handles the 3rd and 4th level of structure. The Page level navigation allows you to navigate the current page's headings quickly. The Header Navigation contains the Light/Dark Mode toggle, Search, Notifications and account login. The Breadcrumb Navigation contains the breadcrumb of the current page. If the current page has a breadcrumb, you can get to it by skipping to the content and tabbing in reverse (shift plus tab). The Footer Navigation contains links such as Privacy, Contact, about and terms. Some resources contain an Audio Player that can be activated by holding down the T key for 3 seconds, and then using K to pause and resume. While not every area of Physics Classroom is usable purely from keyboard and screen reader, we are committed to continue work on making this possible. If you have questions or need additional help, please use this link to contact us.

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Dots and Graphs - Directions

Using the Dots and Graphs Concept Builder is quite simple. You will be presented with three dot diagrams describing the motion of three different objects. You will have to match each one of the three motions to one of six position-time or velocity-time graphs. Each object's motion is matched to a unique graphical representation. Once all matches have been made, a Check Answer button appears. When you are satisfied with your answer, tap on the Check Answer button. Your answer will be evaluated and your Progress Report will be updated.

There are three Activities in this Concept Builder. The Position-Time Graphs Activity involves six Question Groups, each pertaining to position-time graphs. The Velocity-Time Graphs Activity involves six Question Groups, each pertaining to velocity-time graphs. The Mixed Graph Types Activity involves all 12 Question Groups and will interchange position-time graphs with velocity-time graphs.

Your goal is to earn "Stars" and to complete one or more difficulty levels. Stars are earned when you show success on a particular question. Once you show success on all the questions at a particular difficulty level, you will earn the medal for that level.

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