Periodically Microsoft may make changes to the MakeCode software interface. This may cause some of our screen shots in guided materials to look slightly different than the latest version of MakeCode. For example see this article for the effects on Minds on 3.3 Level 2: https://ltslivingspace.slaask.help/hc/general/makecode-interface-changes-fa1e49f3-0e75-4052-8765-61c4703a1cd5
For example, there was an update from MakeCode that you can see here: https://microbit.org/en/2018-10-26-makecode-v1-announcement/
If you wish you may be able to use the previous version that is still available: https://makecode.microbit.org/v0.
If you have any issues accessing the editor, check that it isn't blocked in your school. Check the MakeCode FAQs for how to deal with whitelisting MakeCode: https://support.microbit.org/support/solutions/articles/19000030385-firewall-whitelist-requirements-for-micro-bit-editors
Advice and answers from the LTS_Help Team.