Design firm needed for development of iFrame compatible interactive animations -- 2

We need the attached animations to be integrated/designed as specified. The developed animations must be fully interactive and visually appealing. These will be added to an e-textbook and must be loadable on any common browser for Windows and Mac. We need them to be delivered in an embeddable iFrame format so they can easily be integrated into the e-textbook backend. This is the first of many chapters. If we are able to agree on a good price, and the quality is adequate for this set of animations, we will award you another contract for the rest of the book. The images of the animations that must be developed are attached. The three linked PhET animations must be slightly modified, and the details on what is required are included under the respective links. JavaScript understanding is necessary for editing of the PhET animations, as can be seen in the repositories, which are available at [login to view URL] .