fear not—you can get crayons off the wall in these five genius ways. You'll be able to use common household items such as ...

Once the crayon marks have been removed, use another clean, damp cloth to wipe over the area from top to bottom and left to ...

You could ask your pupils what they think wax crayons are made of and examine some. Then use the clip to establish that wax is produced from oil. The class could research how oil is found and look ...