5th graders conducted their first lab of the school year! While learning about lab safety and the scientific method, they investigated if plants take in carbon dioxide to live and grow with the help of BTB (Bromothymol Blue), an indicator that turns from blue to yellow when carbon dioxide is added. Students tested an aquatic plant in BTB with carbon dioxide and observed dark green, blue color changes in the plant to prove plants do take in carbon dioxide!

5th Grade Explores CO2 and Plants
October 8, 2025