# Cycle 158 ## 158.1 Letter Combinations #### Purpose and Procedure This task requires students to read simple words containing the *oy* or *oi* letter combination after they identify the letter combination and its sound. ## 158.4 Patterns #### Purpose and Procedure This task asks students to read derivatives of minimally different -VC and -VCe base words with *-er*, *-ed*, and *-est* suffixes. At this stage, students are asked to read the underlined base word before reading the full derivative. ## 158.7 Word Parts #### Purpose and Procedure This task introduces the *-er* and *-est* endings, which are added to words in order to make comparisons, as in the words *old*, *older*, and *oldest* (comparatives and superlatives). There are four parts in this task. In the first three parts, students only touch and repeat the words and endings. The first three parts require you to point to specific words as you say them, so pay close attention and make sure that you point to the words as directed in the instructor pane. In the final part of the task, students touch and read the words without you saying them first. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://curriculum.tryonce.com/cycle-158.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.