Using sustainable materials in building architectural models can be tricky. Here are some of the main challenges:

1. Finding the Right Materials: Eco-friendly options like bamboo, recycled plastic, or bio-composites might not be easy to find. This can limit how creatively we can use them.

2. Higher Costs: Often, green materials can be pricier. This can create a problem, especially in schools that have tight budgets.

3. Different Techniques Needed: The usual ways of adding textures might not work well with sustainable materials. This means we need to spend time researching and trying out new methods.

4. Looks Matter: Sometimes, sustainable materials don't look as good as regular ones. This might change the overall design.

Even with these challenges, we can find ways to make it work:

• Working together with suppliers can help us find the right sustainable materials.
• Trying new methods can help us use eco-friendly materials effectively.
• Making sustainability a priority in the design process ensures we choose green options right from the start.