One of the official suggested Webelos activity badges for February and March is Engineer.
Here are the requirements for the Engineer Webelos activity badge:
Do both of these:
1. Talk to an engineer, surveyor, or architect in your area about the different occupations in engineering. Create a list that tells what they do
2. Draw a floor plan of your house. Include doors, windows, and stairways.
And do four of these:
3. Visit a construction job. Look at a set of plans used to build the facility or product. Tell your Webelos den leader about these. (Get permission before you visit.)
4. Visit a civil engineer or surveyor to learn how to measure the length of a property line. Explain how property lines are determined.
5. Tell about how electricity is generated and then gets to your home.
6. Construct a simple working electrical circuit using a flashlight battery, a switch, and a light.
7. Make drawings of three kinds of bridges and explain their differences. Construct a model bridge of your choice.
8. Make a simple crane using a block and tackle and explain how the block and tackle is used in everyday life.
9. Build a catapult and show how it works.
10. While you are a Webelos Scout, earn the Cub Scout Academics belt loop for Mathematics.
Link [Photo via Meritbadge.org]
Posted by Mike Newman 
