Critical Thinking Starts with Literacy

When children learn to read with confidence, they gain access to ideas, questions, and a world worth thinking about.

Critical thinking is one of those phrases we hear everywhere in education, but it can be hard to picture what it really looks like in a classroom, especially for young children.

Critical thinking doesn't magically appear in middle or high school. It’s something that needs to be built on purpose from the very first years of school.

Critical Thinking Starts with Literacy

Children can’t think critically about what they can’t read, understand, or talk about.

That’s why building literacy is foundational at Cornerstone. When students learn to decode words accurately, build vocabulary, and understand language, they gain access to ideas, information, and questions worth thinking about. Strong literacy opens the door to reasoning, problem-solving, and meaningful discussion.

In our classrooms, critical thinking starts with literacy. Reading, writing, speaking, and listening all work together as tools that help children make sense of the world.

Knowledge Matters

Critical thinking depends on having something to think about. A content-rich, knowledge-building curriculum intentionally builds students’ understanding of science, history, geography, and the world around them. With this shared knowledge, students can ask better questions, make connections across subjects, and engage in deeper conversations.

This approach is especially important for equity. When all students have access to strong instruction and rich content, critical thinking becomes something every child can develop, not just those with prior exposure.

We Teach Children How to Think

At Cornerstone, we don’t assume students will “pick up” critical thinking skills on their own. Just as children benefit from explicit, systematic instruction in reading through the Orton-Gillingham approach, they also benefit from being explicitly taught how to organize and share their thinking.

When reading skills are taught clearly and systematically, children don't need to spend mental energy on decoding and can focus on meaning, ideas, and understanding. This creates the conditions for deeper thinking.

We explicitly teach children how to:

• Explain their ideas clearly.

• Compare and contrast information.

• Identify cause-and-effect relationships.

• Support their thinking with evidence.

• Revise their thinking as they learn more.

Writing plays a key role here. Even young students learn sentence structures like, “I think ___ because ___.” These simple tools help children move from opinion to reasoning, and that’s the foundation of critical thinking.

What Does Critical Thinking Look Like in the Early Grades?

In kindergarten through third grade, critical thinking looks different from what it does in high school, and it should.

For young children, it means:

• Explaining why something happened.

• Asking thoughtful “why” and “how” questions.

• Noticing patterns.

• Making connections between ideas.

• Talking about what they’ve learned using precise language.

These skills are carefully scaffolded and practiced daily, in ways that are developmentally appropriate and engaging.

Applying Thinking Through Project-Based Learning

Once students have strong literacy skills, background knowledge, and thinking tools, we give them opportunities to apply their learning through structured, project-based experiences.

Projects might include investigating a local environmental question, exploring a science phenomenon, or solving a real-world problem connected to what students are learning in class. These experiences are meaningful because they are grounded in reading, writing, discussion, and knowledge, not just activity.

Project-based learning at Cornerstone is not unstructured or chaotic. It builds on explicit instruction and allows students to use their skills in authentic ways.

Critical Thinking Is Built, Not Hoped For

We cannot leave critical thinking to chance. We need to build it step by step by providing:

• Strong, evidence-based literacy instruction.

• Intentional knowledge-building curriculum.

• Explicit teaching of thinking and writing skills.

• Developmentally responsive practices.

• Purposeful, real-world application.

With our thoughtful approach, children grow into confident readers, thinkers, and leaders, not just prepared for school but for life.