Unplugged Computational Thinking
There are lots of ways you can teach computational thinking without a computer. For older children you will want to intersperse this with computer use but the activities can help teach the basics in classes with limited computers. Many of the activities are fun to do and are great activities even if you have lots of computers.
Progress Outcome (P.O.) One for Computational Thinking is to be completed using non-computerised (unplugged) contexts. P.O. 2 is completed in both computerised and non-computerised contexts.
Several of the Computational Thinking (C.T.) exemplars are in non-computerised contexts e.g.
Some more ideas can be found on the Unplugged activities page or in the Resources section of this page
Treasure Island Hunt activity on CS Unplugged