Online:
* Amazon: Offers a wide variety of poster boards, including those specifically designed for science projects.
* Office Depot: Provides a good selection of poster boards, including tri-fold boards and foam boards.
* Walmart: Carries a variety of poster boards at affordable prices.
* Target: Has a decent selection of poster boards, including some with pre-printed designs.
* Specialty science supply stores: Companies like Carolina Biological Supply, Ward's Science, and Educational Innovations offer a more specialized range of poster boards suitable for science projects.
Offline:
* Office supply stores: Office Depot, Staples, and Office Max are great options.
* Craft stores: Michael's and Hobby Lobby often have poster boards in their paper or craft sections.
* School supply stores: These stores usually have a good selection of poster boards specifically designed for students.
* Local art supply stores: You can find poster boards in various sizes and colors.
Tips for choosing a poster board:
* Size: Consider the size of your project and the space you'll need to display it.
* Material: Choose a sturdy material that can withstand the weight of your project.
* Color: Opt for a neutral color that complements your presentation.
* Surface: Select a smooth surface that's easy to write or draw on.
Remember: You can also use other materials, such as foam core boards, corrugated plastic, or even fabric, to create a science poster board.