In May 2005, the International Technology Education Association (ITEA) was funded by the National Aeronautics and Space Administration (NASA) to develop curricular units for Grades K-12 on Space Exploration. The units focus on aspects of the themes that NASA Engineers and Scientists--as well as future generations of explorers--must consider, such as Energy and Power, Transportation and Lunar Plant Growth Chambers (the STS-118 Design Challenges). Moreover, the units are embedded within a larger model program for technology education known as Engineering byDesign[TM]. Design is a creative problem-solving process. In this unit, students will design and build a lunar plant growth chamber using the engineering design process. This Design Challenge has been written with two tracks in mind. Track 1 provides a more comprehensive learning experience, and teachers are encouraged to consider exploring this alternative, perhaps working with other teachers in the school to provide students with resources and a laboratory-classroom with the necessary equipment. The Design, Build and Evaluate Challenge is a twelve-to-eighteen day challenge for those teachers and students who have the resources available to build a larger model with operational subsystems. Teachers need to determine what tools and materials are available to students and whether students will build a full-sized or scaled-down version of the LPGC. This extension continues after the Preliminary Design Review (PDR) in Lesson 3 with the students constructing their working prototype and presenting it at the Critical Design Review (CDR) in Lesson 4. The Design and Evaluate Challenge is a five-to-seven day challenge. It requires students to design and build a small model of a Lunar Plant Growth Chamber (LPGC). This challenge ends with Lesson 3, culminating with the Preliminary Design Review (PDR). Resource documents are appended.