Understanding Sentence Substitution for Effective Learning

The question asks us to identify the most appropriate option to replace the underlined segment "inso manyperiods over time" in the given sentence:

"Practising math sums inso manyperiods over time is better than in long periods of time, for effective learning."

The sentence discusses the optimal way to practice math sums for effective learning, comparing practicing in the manner described by the underlined phrase with practicing in "long periods of time". The phrase "inso manyperiods over time" is grammatically incorrect and awkward. We need to find a substitute that makes the sentence clear and meaningful, especially in contrast to "long periods of time".

Analyzing the Options for Substitution

Let's look at the provided options and see how they fit into the sentence:

1. much: If we substitute "much", the sentence becomes "Practising math sums in much periods over time...". "Much" is typically used with uncountable nouns (e.g., much water) or with comparisons (e.g., much better). Using "much" with the plural noun "periods" is grammatically incorrect.
2. No substitution: The original phrase "inso manyperiods over time" is grammatically incorrect and doesn't make sense. Therefore, substitution is required.
3. short: If we substitute "short", the sentence becomes "Practising math sums in short periods over time...". This phrase is grammatically correct and directly contrasts with "long periods of time". It suggests practicing in frequent, brief sessions, which aligns with principles of effective learning like spaced repetition.
4. too much: If we substitute "too much", the sentence becomes "Practising math sums in too much periods over time...". Similar to "much", "too much" is generally used with uncountable nouns or before adjectives/adverbs. Using "too much" with the plural noun "periods" is grammatically incorrect in this context.

Evaluating the Context and Meaning

The sentence implies that one method of practicing math is superior to practicing in "long periods of time" for effective learning. The options suggest a contrast based on the duration or nature of the practice sessions. The phrase "short periods over time" provides a logical and grammatically sound contrast to "long periods of time". This structure implies that practicing in frequent, shorter sessions spread out over time is better than practicing in infrequent, longer sessions.

Based on grammatical correctness and the intended meaning of contrasting different practice approaches, "short" is the most appropriate word to complete the comparison logically and grammatically.

The analysis clearly shows that "short" is the only grammatically correct and contextually appropriate option that provides a meaningful contrast to "long periods of time" for discussing effective learning strategies.

Revision Table: Key Learnings

Additional Information: Effective Learning Strategies

The sentence touches upon effective learning. Research in cognitive psychology suggests that spaced repetition, which involves reviewing material at increasing intervals over time, is highly effective. This method often involves shorter study sessions spread out, rather than cramming in one long session. Practicing in "short periods over time" aligns well with this principle of spaced repetition and distributed practice, which leads to better retention and understanding compared to massed practice (long periods).

• Spaced Practice: Learning is distributed over time.
• Massed Practice: Learning is concentrated in a single session (cramming).
• Benefits of Spaced Practice: Improved long-term retention, better understanding, reduced fatigue.

Understanding grammatical rules and sentence structure is crucial for effective communication and for tackling sentence substitution questions in exams.