# Lesson 3.7: Lesson 3 Summary

Welcome to Lesson 3.7! We'll be reviewing and reinforcing the concepts you learned in the previous lesson. Let's get started by refreshing your memory on the material you've already covered.

{% embed url="<https://youtu.be/gxan_u2pStE>" %}

{% tabs %}
{% tab title="Concepts Recap" %}
Congratulations on finishing all the lessons! Now, you are able to:

* Describe what the script context is.
* Explain how Plutus scripts manage script context via the `ScriptContextV2` data type.
* Handle time in transactions using the `POSIXTimeRange` data type.
* Describe how the time range works in Cardano while sending transactions to the blockchain.
* Use Plutus to implement a time-handling example.
* Define parameters to provide information to a smart contract.
* Explain the differences between using the datum or parameters to define values in smart contracts.
* Understand how to create off-chain code by using Lucid.
* Relate how a simple dApp for Cardano can be created using Lucid.
* Understand how reference scripts work in the Vasil hard fork.
* Restate the benefits of using reference scripts.
  {% endtab %}
  {% endtabs %}

## Collaborate with the Pioneers Community

Remember that you can interact with the participants of the PPP through the [IOG's technical community on Discord](https://discord.gg/inputoutput) by joining the channels under the Plutus Pioneers category.

If during the program you have questions about Plutus, we invite you to share them at [Cardano Stack Exchange (CSE)](https://cardano.stackexchange.com/) by adding the `plutus-pioneer-program` tag to your question. The IOG's Education Team members will monitor these questions to support your learning journey. Whenever you share a question at CSE, you're helping to build up the Cardano and Plutus development knowledge base.

***

This work is licensed under a [Creative Commons Attribution 4.0 International License](http://creativecommons.org/licenses/by/4.0/).

<figure><img src="https://i.creativecommons.org/l/by/4.0/88x31.png" alt="Creative Commons License BY 4.0"><figcaption></figcaption></figure>


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