Few debates are as accessible to young students as the question of whether people are shaped by their genes or by their upbringing. Callum McBride touches on it through the revelation that Callum has a twin brother named Carl who has grown up in a very different situation. This sets up a natural comparison for essays about identity and influence.

Introduce the concept of nature versus nurture with a short discussion using everyday examples such as talents that run in families and habits learned at home. Students quickly see that most traits involve both influences. This understanding helps them avoid writing a simplistic essay that declares one side the winner.

Frame the essay as an argument about how much each factor matters for the characters in the book. Students must use specific information about how Callum and his brother developed in different environments and what they have in common. The focus on the text keeps the essay from becoming a general opinion piece.

Building the argument

A strong thesis takes a position on the balance between nature and nurture, such as arguing that the brothers' shared abilities show the power of inheritance while their differing choices show the weight of environment. This kind of claim acknowledges complexity yet remains arguable. Teachers should encourage students to draft multiple versions and pick the most defensible.

• State a clear position on how nature and nurture shape the characters
• Use at least two pieces of evidence about Callum's upbringing and abilities
• Compare Callum's path with his twin's and explain what the contrast reveals
• Address the strongest argument for the opposing view and respond to it
• Close by explaining what the novel suggests about identity and choice

Scoring balanced arguments

A good rubric for this essay rewards nuance as much as the strength of the position. A student who recognizes that both factors operate and argues for a particular balance should score higher than one who dismisses either side. Descriptors should emphasize how well the student integrates evidence from both perspectives.

Be wary of essays that rely on outside claims about genetics that are inaccurate or unsupported. If students introduce research, they should cite it and explain it clearly. A brief conversation with the science teacher can help you check facts when needed.

Connecting to science and social studies

This topic connects well to biology lessons on heredity and to social studies lessons on how environments shape communities. A joint project can ask students to gather real-world examples to support their arguments. This expands the essay beyond the book while keeping it grounded in evidence.

Collaboration also lets students see that the same question is studied from different angles in different subjects. They practice synthesizing information, a skill that carries into higher grades. The writing assessment becomes a bridge between disciplines.

Feedback that sharpens reasoning

Feedback on argument essays should target logical gaps. If a student claims that environment matters most but provides evidence about inherited abilities, a comment such as "Does this example support your claim?" helps them spot the mismatch. Questions like this teach students to test their own reasoning.

Since many students will make similar logical errors, AI-supported feedback can catch the most common ones and give teachers a head start. Reviewing and personalizing those comments takes less time than writing each from scratch. Students benefit from timely, consistent responses that sharpen their argumentation.