Brain Hemispheres and Teaching

A teacher who knows how the brain works can plan better lessons.

The human brain has two hemispheres. The left and the right. They have different functions. A child’s learning depends on both being used and developed. A teacher who teaches in ways that engage only one hemisphere leaves the other underdeveloped.

A note on left brain, right brain

The strict left-brain or right-brain picture below is a classic framework, and it has been useful in classrooms for decades because it pushes teachers to balance verbal and visual, logical and creative work. Modern brain research is more careful. Most everyday tasks use both hemispheres together. Labelling a student as a “left-brain learner” or “right-brain learner” is treated as a neuromyth in current education neuroscience.

Read what follows as a planning lens for varied lessons, not as a diagnostic tool for individual children.

The two hemispheres

The brain has a left hemisphere and a right hemisphere. The two are connected but each has its own specialties.

Left hemisphere. Handles verbal learning, verbal communication, logical thinking, convergent thinking, classification (also called category function), and detail orientation.

Right hemisphere. Handles visual learning, visual thinking, non-verbal communication, divergent thinking, spatial function, and intuition.

Set this out as a table. Visual learners benefit from seeing the comparison side by side.

Convergent vs divergent thinking

Two terms in the table need explanation: convergent and divergent thinking.

Divergent thinking. Outside-the-box thinking. Coming up with many ideas. Asking “what if” questions. “What if an elephant could climb trees?” “What if Pakistan had a major water shortage in the next 20 years?” “What if a lot of natural resources were discovered in Pakistan in the next 10 years?” These questions force the mind to leave fixed patterns.

Divergent thinking matters for creativity. A student who can only think in fixed patterns cannot solve new problems or imagine new things.

The right hemisphere drives divergent thinking.

Convergent thinking. Bringing many ideas together to draw a single conclusion. Analytical thinking, evaluative thinking, and logical thinking are all convergent. The student takes facts and converges them logically toward a conclusion.

The left hemisphere drives convergent thinking.

The names come from lenses. A convergent lens focuses light to one point (like a long-sighted person’s spectacles). A divergent lens spreads light wide. The thinking styles work the same way.

A familiar example: faces and names

Here is an example most people recognize. Some people are good at recognizing faces. Some are good at remembering names. Some can do both.

Recognizing a face. Right hemisphere function. Visual and spatial.

Remembering a name. Left hemisphere function. Verbal.

A person who recognizes faces but forgets names has a strong right hemisphere visual function but a weaker left hemisphere verbal function. A person who remembers names but cannot place the face has the opposite. A person who does both equally has both hemispheres working well.

The same principle applies to learning. A child who can describe a picture but cannot put the description in words is leaning on the right hemisphere. A child who can read a description but cannot picture the scene is leaning on the left.

Children’s brains are still developing

A young child’s brain is not fully separated into right and left functions. Up to age 8, the hemispheres are still developing. Information from the right side sometimes goes to the left, and vice versa.

Adults sometimes interpret this as inattention. A child mixes up details, jumbles a story, or gives an answer that does not seem to fit. Adults say “the child is not paying attention.” The correction: it is not a matter of attention. The child’s brain structure is still maturing.

By age 8, the hemispheres are well differentiated. The mixing reduces. Strong-side preferences become clearer.

This affects how teachers design activities for young children. Activities that demand strict left-hemisphere or strict right-hemisphere thinking may be too rigid. Activities that mix both work better.

What research shows about classrooms

Most teaching focuses on the left hemisphere. Logical thinking, verbal intelligence, convergent thinking, detail orientation. Tests reward these. Lessons emphasize them. Curriculum lists them.

The left hemisphere becomes dominant; the right becomes passive. The student’s left hemisphere develops more. The right hemisphere does not develop at the same rate.

This creates an imbalance that limits the left hemisphere too. A child whose right hemisphere stays passive does not reach the highest level of left hemisphere function either. The two hemispheres support each other. When one is underdeveloped, the other cannot reach its full potential.

When both hemispheres are developed, both reach higher levels. Children excel when their lessons engage both. The left rises higher than it would alone. The right grows alongside it.

The classroom takeaway is clear. A teacher who only does logical, verbal, detail-oriented activities is limiting students. A teacher who balances logical with creative, verbal with visual, convergent with divergent helps students grow more fully.

Flashcard

What does brain hemisphere research say about teaching only to the left side?

Tap to reveal

Answer

It limits both hemispheres, not only the right

When the right hemisphere stays passive, the left does not reach its full potential either.

When both hemispheres develop together, both rise higher than either could alone.

A balanced lesson plan that targets both verbal and visual, logical and creative, convergent and divergent thinking serves children better than a left-side-only lesson plan.

Designing for both hemispheres

Some teachers worry that right-hemisphere objectives cannot be measured. Creativity, divergent thinking, and visual expression seem to defy SMART objectives. They do not.

Right-hemisphere objectives can be SMART. The teacher just has to think more creatively about the criteria. Three examples follow.

Example 1. “By the end of the lesson, students will be able to create a story by using a story starter in which all the physical elements of the story starter are incorporated into the plot.”

This is divergent thinking (creating a story) but it is measurable. The criterion is that all physical elements from the starter must appear in the plot. Two children’s stories can both satisfy the criterion while being entirely different. Both develop divergent thinking and can be evaluated.

Example 2. “By the end of the lesson, students will be able to use only three primary colors to create a painting that includes all the elements of the modern style.”

Visual and creative (right hemisphere) but measurable. The condition is three primary colors only, and the criterion is that the modern style elements appear.

Example 3. “By the end of the lesson, students will be able to create a brochure on cell travel that aligns with the principles of cell function.”

Highly creative but measurable. Students cannot do this without first understanding the cell. The condition is that the brochure must reflect cell function principles. Different brochures will look different and still meet the criterion.

These examples show that right-hemisphere thinking can be measured. The teacher needs to set clear criteria while leaving room for creative variation.

Why teachers must care

A child who leaves school with a developed left hemisphere but a passive right hemisphere is not fully educated. They can take a test, follow a procedure, write a report. But they may struggle with creative problems, visual reasoning, intuitive judgment, or work that requires reading non-verbal cues.

The job of a teacher goes beyond covering the curriculum. It is helping the child’s brain grow in balance. Both sides must develop. Both must work together.