The six parts of the TACHS, explained

The TACHS includes school subjects and visual reasoning. Knowing what each part asks is useful before working against a clock. A student needs to distinguish a passage question from a revision question and a matrix from a classification group, even when several answer choices look familiar.

The official Parent Guide describes six timed subtests. The Student Handbook groups content as Reading, Written Expression, Mathematics, and Ability, and shows three picture-question families within Ability. TACHS Prep practices the six parts in this order: Reading, Written Expression, Mathematics, Figure Matrices, Paper Folding, and Figure Classification.

Reading

Reading questions ask students to make sense of a passage. The handbook describes factual, interpretive, and evaluative understanding, including main ideas, purpose, and vocabulary in context. Students should expect to explain an answer using the text rather than general knowledge of the topic.

A useful routine is to read the passage for its main point, then identify exactly what a question asks. A detail question and a question about the author’s purpose need different evidence. Underline mentally what the option claims, including qualifying words such as always, only, and most.

During review, compare the chosen option with the part of the passage that supports or contradicts it. If an answer is partly supported, identify the unsupported phrase. Replacing an argument about what sounds plausible with a check of the actual text makes review more precise.

Written Expression

Written Expression concerns sentences and organized writing. The handbook describes decisions about clarity, effectiveness, organization, and sentence structure. Its samples include revising a verb form and choosing a suitable ending. A preparation program should distinguish these tasks instead of treating every question as a spelling drill.

For a sentence-level question, find the specific problem. Check the subject and verb, the time of the action, and the relationship between clauses. Read the whole sentence after choosing a correction so that fixing one part does not create another error.

For passage revision, consider the writer’s point and the role of each sentence. A grammatical sentence can still be a poor conclusion if it introduces an unrelated idea. Explain what the revision improves, such as maintaining a consistent tense or bringing the paragraph back to its main claim.

Mathematics

The handbook names number sense and operations, algebraic patterns and connections, data analysis, probability and statistics, geometry, and measurement. Review should connect these topics to questions, rather than assume that memorizing a list of formulas covers the work.

Before calculating, identify the quantity requested and its units. A word problem may produce a useful intermediate number that is not the answer. Write enough of the setup to see whether a rate, length, total, or probability is being requested.

The Parent Guide describes an embedded four-function calculator for eligible portions and prohibits personal calculators. It does not clearly specify every eligible question or subtest in the reviewed material. Check the current official directions instead of assuming that every mathematics question permits the same tool.

Figure Matrices

A matrix presents figures arranged in a grid with one missing position. The student identifies relationships that fit the completed rows and columns, then chooses the missing figure. An attractive answer is not enough; it must fit the grid’s relationships.

Inspect the parts of each figure separately. Count marks, compare position, and look for additions or combinations. Use a complete row to propose a rule and another complete row to test it before applying it at the blank.

Our Figure Matrices guide has two original worked examples. They teach how to test a rule and reject a choice that matches one feature but fails another. They are instructional examples, not released official items or a statement about secure-test difficulty.

Paper Folding

Paper Folding shows a sheet folded and punched. The student imagines the sheet opened again and chooses the resulting hole pattern. The main reasoning step is reflection across a fold, not sliding a hole to another part of the page.

Undo folds in reverse order. With each unfolding, preserve the existing holes and add their reflected locations where the layers require them. Check distances from the crease. Two points on opposite sides must be equally far from that line.

The Paper Folding guide starts with one vertical fold, then combines vertical and horizontal folds. Paper can help during a learning demonstration, but the Parent Guide says scratch paper is not allowed for the official Ability portion. Move to mental practice after the method is understood.

Figure Classification

A classification question gives a group of figures that share a property. Choose the answer that belongs with that group. The task is about a common relationship, not copying the appearance of the first figure.

Compare every group member before reading too much into a single detail. If shapes differ but all have a dot outside them, the relationship of dot to shape may matter more than whether a shape is a triangle or square.

Our Figure Classification guide shows how to state a rule and test all five options. During review, explain why each wrong option breaks the rule. That is more informative than saying the correct picture looks similar.

Estimated practice timing

TACHS Prep uses the following practice model. These counts and times are estimates based on public information. They are not a published official TACHS blueprint.

The reviewed official Parent Guide gives an approximate overall regular testing time of two hours and ten minutes, plus breaks. It does not provide the full per-part table above. Treat exact pacing targets as practice settings that may change with better information.

Choose standard time for pacing practice, time and a half when practicing that approved accommodation, or untimed study mode for learning. A practice timer does not approve an accommodation. Whatever mode you use, reserve time afterward to explain errors and choose the next skill to review.