Scientists keep careful records of their investigations. So should you. This page shows what a careful record should look like.
Always write your name and the date at the of each page. Number all pages.
Write the idea you want to test
List the materials and tools you used
Describe all the steps in your investigation. List the steps in the order you did them.
Record all data right away. Record data accurately, even if you think the data is wrong.
Record the units for all measurements.
Write your ideas about what the data mean and whether they support your hypothesis
Science Alert!!!!!

Never cross out and change data so that your results come out the way you think they should. Remember, you are trying to answer a question. Don't decide on the answer before you finish the investigation.