Interleaved practice means mixing several types of problems instead of finishing one identical set before moving to the next. Its practical advantage is that it forces you to choose a method without the order of the exercises giving it away. Start, however, by understanding each method separately.
Distinguishing repetition from method choice
In a set where all the exercises use the same property, you already know what to apply. This repetition can help you get started, but it tests method choice only weakly.
A mixed set creates a different challenge: recognizing what the question is asking. You have to identify the data, select a rule, and check its conditions.
Teaching example: mix a few exercises from families you have already studied. Do not create a session where each problem introduces an unknown technique.
What the research allows us to say
A randomized trial by Rohrer and colleagues studied interleaving in mathematics. Its results concern a specific intervention and specific conditions; they do not guarantee the same gain in every subject.
The review by Dunlosky and colleagues also examines this technique. In practice, the main thing to keep in mind is the skill being worked on: learning to discriminate between situations.
Mixing documents without a goal is not enough. Alternating subjects in your schedule is not necessarily interleaved training for choosing a method.
Preparing a short set
Select exercises whose prerequisites you know. Remove the titles that reveal the property to use, as long as this still fits the work required by the teacher.
Before each solution, write down the method you chose and why. After correction, look at whether the error came from choosing the method or from carrying it out. These two difficulties need different fixes.
Our article on revision planning helps you place this session after initial learning, without turning it into a rule for every study block.
Using a comparison sheet
When two methods look alike, create a table: relevant clues, conditions, first step, and verification. Add a statement for each case.
An AI revision sheet can help you organize these elements from your course notes. Check the conditions and test the table on real exercises.
EduFiche quizzes can complement the work with discrimination questions. Make sure they really ask you to choose, rather than recite a formula.
Going back to targeted practice if needed
If you cannot carry out any method, go back to a worked example before mixing. If you can solve problems but often choose the wrong property, comparison becomes the priority.
A harder session is not automatically better. Keep track of errors and check whether you can solve a new set after correction.
For your next session, choose two families you already know and a few varied problems. Write why you are using each method. The expected result is a justified decision, not just a filled page.