Educators looking for ways to keep classrooms interactive in remote settings should check out Ptable, a highly regarded tool for chemistry teachers. Featuring the self-described "world's most popular periodic table," this interactive science site is packed with information and activities. A variety of unique features make Ptable stand out from similar sites. For example, data updates in realtime and is sortable by more than a dozen properties. More information about these features can be found under the About tab. Ptable can be focused on Properties, Electrons, Isotypes, and Compounds (using the corresponding tabs). The information displayed by toggling over individual elements varies based on this initial selection. For instance, the Properties view includes an element's melting and boiling points, while the Electrons view focuses on energy levels. The buttons in the upper-right corner allow users to adjust aesthetics, such as the screen width and background color. To find lesson plans that accompany the site's features, check out the Lesson Plans page under the Products tab (found at the bottom of the page). Michael Dayah created Ptable in 1997 and has frequently updated its content since.