Teaching Resource

Let's Cooperate Code Cracker - Upper Primary

PDF | 29 pages|Grades: 4 - 6

A whole class game including a collection of 6 activities which students need to solve to reveal numbers to combine for a lock combination.

Start your classrooms school year with a bang and help students introduce themselves to each other with the Let’s Cooperate Code Cracker! Students need to work together on 6 tasks to reveal 6 numbers to crack a lock combination. The groups are then presented a final riddle to help them arrange their code in the right order to help them succeed in their mission. Get a 6 digit lock or 2X 3 digit locks and a lockable box to hide a reward or message for students to compete for.

Run this activity as a timed rotation system for six groups on six activities or create it as a race to the finish. As previously seen with Teach Starters, Marvin Measurement’s Treasure Box and Christmas Code Cracker, students love working together on the variety of small group tasks, where students need to communicate and cooperate together to help each other succeed.

This teaching resource has a PDF that includes teacher instructions, activity answers, activity templates, task cards. Also available in lower and middle year levels.

Make sure you visit the links below and download the additional resources.

Activities include:

  • Start Poem
  • Ancient Code Wheel
  • Illustration Treasure Hunt – download 5X Inference Scenario Posters below.
  • What Time – download Time Zones World Map.
  • UV Scavenger Hunt – you can find UV pens, also known as spy or detective pens in the stationery section of your local department store.
  • Hidden Object
  • Pirate Voyage
  • Finishing Riddle

Other resources included:

You will also need to visit and download these resources

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Comments & Reviews

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Hayley Forrest

I need a padlock and a UV pen?!

Hayley Forrest · Feb 7th, 2021

Paul (Teach Starter)

Hi Hayley,

Both of these items can usually be found at hardware stores and even some newsagents. I did a quick search online and found several options in my local area. Hopefully, you will have similar success!

Paul (Teach Starter) · Feb 8th, 2021

Rach C

Hi, Kids loved it when I did it today
– the illustrations lined up with a c instead of a t though making the number t)
– the questions on the wheel also aren’t in the right order

Rach C · Jan 29th, 2019

Royce (Teach Starter)

Hi Rachelle, thank you for reaching out to us. Thank you so much for your lovely feedback. I am glad you class enjoyed the games. The code wheel was designed to be in a random order, so the players need to work together to figure out where they go. The order of the questions do not correlate to the positioning on the wheel. In regards to the illustration task, we have done checks on our end and the letters match up, however, sometimes changes can be due to a printing setting, so will provide a link that may help size it correctly. If you need more assistance, please do not hesitate to contact us.

Royce (Teach Starter) · Jan 31st, 2019

Naomi Wiseman

I will be using this for sure. Just a note, you state that UV pens are available in the stationary section. I’m sure you don’t mean a section where you stand still.

Naomi Wiseman · Jan 26th, 2019

Royce (Teach Starter)

Hi Naomi, thank you for your lovely feedback. I hope your class has a great time getting to know each other with these activities. Thank you, stationery typo noted and fixed.

Royce (Teach Starter) · Jan 29th, 2019

Kim Jorgensen

Thanks for a great resource. There’s just a small typo to fix in the HIDDEN OBJECT Riddle, 10th line -places instead of placed: Your next digit will be places on its underside.

Kim Jorgensen · Jan 26th, 2019

Royce (Teach Starter)

Hi Kim, thank you for contacting us about the error in our resource. The task card has now been updated.

Royce (Teach Starter) · Jan 29th, 2019

Rach C

This looks great – just have to find UV pens in the country!

Rach C · Jan 21st, 2019

Royce (Teach Starter)

Hi Rachelle, thank you for your supportive comment. You can get UV pens or can also be known as spy pens in the stationary section of department stores.

Royce (Teach Starter) · Jan 22nd, 2019

Lachlan Grove

Where are the task cards that go with this? I cant find them anywhere and they were not in the download

Lachlan Grove · Jan 20th, 2019

Royce (Teach Starter)

Hi Lachlan, thank you for reaching out to us. The task cards are on pages 4, 5 and 6. If you need any more assistance, please do not hesitate to contact us.

Royce (Teach Starter) · Jan 22nd, 2019

Benjamin Angus

Where would one find the UV pens and such equipment? This looks sensational and I’d love to try it with my class when school goes back 🙂

Benjamin Angus · Jan 18th, 2019

Royce (Teach Starter)

Hi Benjamin, I am excited to hear you will be using this with your class. You can get UV pens or can also be known as spy pens in the stationery section of department stores.

Royce (Teach Starter) · Jan 18th, 2019

Kylie Johnson

This looks like fantastic fun!

Kylie Johnson · Jan 17th, 2019

Royce (Teach Starter)

Thank you for your lovely comment. I hope your class has fun with this.

Royce (Teach Starter) · Jan 17th, 2019

Resource Updates

  • In the Hidden Object Task Card, worth has been changed to work.

    Fix by Royce (Teach Starter) Jan 15th, 2020

  • In the hidden object task card, the typo places has been changed to placed

    Fix by Royce (Teach Starter) Jan 28th, 2019

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