In Science Class . . . Week of 4/9 and 4/16

4th Grade: Last week, students set up terrariums with soil, water, and seeds from various plants. Most of the seeds have since germinated and are looking great! The seedlings range from 1 to about 12 cm tall. We discussed the biotic and abiotic environmental factors that can influence plant growth, such as light, temperature, soil, water, insects, other plants, etc. We've also been focusing on measurement in the metric system, using our rulers to find the height of the seedlings in centimeters. This week, we continued our terrarium observations and also started to look at live beetles and isopods (aka "rolly pollies").

• What factors could influence plant growth?
• What is the difference between biotic and abiotic factors? (Biotic factors are living, while "abiotic" means nonliving)
• What do plants need to survive?
  
• What did you notice about your beetles and isopods?

5th Grade: Fifth graders have been continuing their study of living systems. Last week, we wrapped up the human body systems and this week have been studying plant systems. On Monday, students designed an experiment with celery. Experiments varied, but many students are comparing water intake between plants with leaves and plants without leaves. We'll continue to monitor the celery through out the week. We also have a demonstration going that has celery in water with red food coloring!

Also, know that the 5th graders will be taking a state test in science in a few weeks (along with language arts and math). The test will cover 4th and 5th grade content. Because 4th grade was so long ago, I'm spending a bit of time each week reviewing material. If you would like more information on the science standard framework and released questions, please visit

http://www.cde.ca.gov/ta/tg/sr/documents/cstrtqscience5.pdf