Scientist of the Month bulletin board-- nice. I love this idea. Why not a scientist of the month and an artist of the month and an author of the month and mathematician of the month and an inventor of the month.
Weather Week: This preschool cotton ball clouds activity is great for preschoolers learning all about the weather. Have fun making clouds out of cotton balls and then use the printable to cut out and label all of your clouds.
Interactive Science Notebook Activities for the Human Body- each body system is represented with 31 activities and an additional 12 title pages and KWL charts. Directions, pictures of real products, and answer keys included.
Weather & Climate - When doing a lesson over the different factors that contribute to weather, this can be a useful activity to identify the weather instruments that are utilized to measure various factors including wind speed and air pressure.