The problem asks us to identify which strip model shows 10%. Each strip model is divided into 10 equal parts. We need to find the model where one out of the ten parts is shaded.

1. Problem Description

The problem asks us to identify which strip model shows 10%. Each strip model is divided into 10 equal parts. We need to find the model where one out of the ten parts is shaded.

2. Solution Steps

First, we need to recognize that 10% means 10 out of 100, or $\frac{10}{100}$.

We can simplify this fraction by dividing both numerator and denominator by 10, which yields $\frac{1}{10}$.

This means that 10% is equivalent to 1 out of 10 parts.

Now, we inspect the strip models. Each model has 10 parts. We look for the model where exactly one part is shaded.

The first model has one shaded part.

The second model has three shaded parts.

The third model has one shaded part.

Therefore, the first and third models each represent 10%. Since we can only pick one model, we must pick the first one.

3. Final Answer

The first model shows 10%.