Click on the link and watch the video called 'lesson 3 - measure length (2)'.
For activity 1, don't worry if you do not have access to a printer. Just download the activity and write the answers in your exercise book.
Activity 2 is a challenge if you would like to give it a go! Again don't worry if you haven't got a printer, download the document and ask a grown up to copy the questions into your exercise book for you to answer.