Holt Science Virtual Labs

Holt Science Virtual Labs are browser based interactive labs developed to accompany Holt Science and Technology textbooks, now part of Houghton Mifflin Harcourt. Each lab simulates an experiment in areas such as biology, chemistry, or earth science, allowing students to change variables, collect and graph data, and answer analysis questions. These virtual labs were created to give learners practice with scientific inquiry even when real equipment or materials are not available. Families who access them through school portals or archived links use Holt Virtual Labs to supplement hands on experiments, preview lab skills, or provide an alternative for topics that are difficult or unsafe to replicate at home.