The Effects of Three Instructional Methods on the Reading Comprehension and Content
- Describe in broad stokes the reading processes that take place during comprehension of informational text (p. 362, under Construction of Meaning and Concept Development with Informational Texts).
Cognitively, comprehension of informational texts requires accessing accurate, relevant knowledge, managing mental processes (both top-down and bottom-up) during reading within the confines of a limited working memory, and constructing a coherent mental representation through pruning and organizational processes. Both explicit cognitive strategy instruction and high level social interaction around text are important keys to improving text comprehension and concept development.
- Specify the effect that background knowledge may have on constructing mental representations from informational text. Why should teachers be concerned about activating prior knowledge?
Young children rely heavily on background knowledge in their interactions with text. Mediation that prompts young readers to activate relevant background information is an important support, but teachers must be sensitive to dialogue indicating that children may be relying on inaccurate or irrelevant prior knowledge. McKeown and Beck’s work with interactive read-alouds in kindergarten and first grade determined that extensive discussions around the students’ experiences led to inaccurate or limited recollection of the text. As a result, their “Text Talk” read-aloud procedure calls for a focused discussion of the text.
- What are the three instructional approaches that can be used to help primary-grade students comprehend informational text? Describe their common (p. 365) and distinctive features (p. 363-5).
Picture Walk: The pre-reading conversations that happen before readers begin a text. It is commonly used with leveled text—small paperbacks that have been leveled, using a narrow gradient readability scale based on qualitative text features. The conversations typically occur as the teacher and students preview each page or few pages of a new book, before reading. The pictures are used as a catalyst for a discussion of what the book is likely to be about. Two or three vocabulary words are explicitly introduced during the PW.
Know-What to Learn-Learn: A technique that is meant to enable teachers to access the prior knowledge of students and to help students develop their own purposes for reading expository text. It is a process during which the teacher generates a discussion about a text topic and uses a chart or worksheet to record students’ statements about what they know (K), want to learn (W), and, after reading, what they learned (L).
Directed Reading-Thinking Activity (DRTA): An instructional framework that views reading as a problem-solving process best accomplished in a social context. The teacher’s role is to select an instructional level text, divide the text into meaningful sections, and facilitate discussion of each section of text. Students are responsible for establishing their own purposes for reading, generating predictions, justifying those predictions, independently reading the text, and verifying or revising predictions based on evaluations of information in the text during the teacher-led discussion of each section.
All of these methods have a strong emphasis on reader engagement and social mediation, they activate the prior knowledge that the students possess, and they all purposefully predict and anticipate what information might be likely to be included in a text.
- What is the purpose of the experimental study reported?
The purpose of this study was to explore how the PW, KWL, and DRTA might influence developmental reading abilities and content acquisition when used with informational text in the primary reading group context. The focus of the investigation was on the ways the differences in instructional approaches influenced the construction of meaning by novice readers.
- Who were the subjects?
The participants were 31 second-grade students in two demographically similar schools, in the same school district, in a midsize Midwest city. Originally, there were eight groups of four students participating in the study—four groups in each of two cycles of instruction. The cycles were conducted consecutively during the first half of the academic year with a three-week break between the cycles. One child from School A moved early in the study.
- Describe the reading materials used during the intervention.
The texts addressed science topics that had been taught to the students in their first- or second grade science curriculum as part of the state science content standards. The specific sequence of topics for each group during both cycles was: spiders, the moon, how water changes form, and insects. Each week, they used a set of three different informational texts containing common information about the same topic, resulting in a total of 12 texts or leveled little books during the study.
- How long did the experiment last?
They gathered data over 10 weeks, and conducted two four-week periods of intervention within that time frame. Groups 1 through 4 from School A received the intervention during the first cycle, and Groups 5 through 8 from School B received the intervention during the second four-week cycle.
- What were the experimental conditions?
The study was designed to replicate, as much as possible, the small group reading instruction that approaching-grade-level readers typically experience. Interventions and data collections were conducted for each group. All lessons were recorded on audiotape. In School A, sessions were held at a table in a hallway. In School B, sessions were held at a table in the school’s kitchen or at a table in a partitioned room shared with other teachers working with small groups of children.
- Describe the procedures specific to the Picture Walk, KWL, DRTA, and the Control Group conditions.
During the picture walk, Stahl followed the guidelines that were recommended for books at this level. Before reading, she presented a brief overview of the text. Then the class engaged in an interactive discussion about the book as they worked through the book page-by-page, talking about the pictures, the text structure, and the student’s prior knowledge, and formulating predictions based on that information. Topic headings were addressed, when available. To generate a discussion of the pages, Stahl frequently said to the children, “What words would you use to describe what you see happening on this page?” or “What do you think the writer is going to be teaching us about on this page?” the children mumble read the text independently. After reading, they discussed whether their predictions were verified and collectively summarized the information from the text.
On Day 1 and Day 3, they made a group KWL chart interactively. After Stahl introduced the topic, the children discussed the topic. Their input was written on the chart in the Know column. On Day 2 and Day 3, each child wrote what he or she knew on a personal KWL chart before it was shared and written on our large group chart. Next, the children categorized the recorded information. The next step was for the children to generate questions about the topic. Before generating questions that were placed in the “What I Want to Learn” column, Stahl provided the same brief overview of the book that the other groups received before reading. The table of contents of the book was discussed, when available, so that the students would be more likely to anticipate the content and generate questions that could actually be answered in each book. She wrote their questions and “want to learn” statements on the group chart each day. Then she guided various discussions to help the children generate questions based on the table of contents or text headings and that would likely be answered from reading each text. After their pre-reading discussion, the children mumble read the entire text. After reading, they began their post-reading discussion by considering whether the text had provided answers to any student questions. If so, Stahl recorded the information in the “What I Learned” column.
For the DRTA, (before reading) the students formulated and justified predictions about the text based on the title, cover, prior knowledge, and if available, table of contents. Students predicted for a two-page or three-page section of text. Then they mumble read that section of text. After reading each section of text, a brief discussion was held to verify predictions, summarize the information in the text, and generate new predictions for the next section of text based on the discussion about the text, pictures, and headings, if available. At the conclusion of the entire text, discussion was minimal about the overall text.
- What measures were used to determine the relative effectiveness of the treatments? Describe the measures briefly.
The Vocabulary Recognition Task (VRT) is an experimenter-constructed yes/no task used to estimate vocabulary recognition in a content area and to confirm that groups had similar levels of prior knowledge of the topic.
The Maze Task is a multiple-choice cloze modification. It is a timed (three minutes), group-administered task. The original text read by the students is reprinted after the deletion of 10 content words. The score on the maze task is the number of correct responses.
Free Recall is prompted with the question: “Please tell me everything you can remember about the book. Also tell me anything the book made you think of.” Individually, the students recall everything they can remember from the day’s text.
In a Cued Recall, each child is asked to answer three explicit and three implicit questions based on that day’s text. First, the items are scored as correct or incorrect as a measure of general comprehension. Both correct and partially correct items were scored as correct. A four point scale is used to produce weighted scores for each answer
- Which treatment(s) were found to be more effective in increasing students’ vocabulary knowledge and maze performance (p. 381)?
All intervention groups made vocabulary gains. The use of informational texts with novice readers does extend their vocabularies. It seemed likely that the picture walk would yield greater vocabulary gains than the other methods because two to four tested words were explicitly taught before reading each text. However, students in all interventions made similar gains. Both the PW and DRTA yielded statistically significant effects on the maze. A comparison of effect sizes suggests that a slightly larger proportion of variance is explained by PW than DRTA. Both procedures were more effective than KWL or the control procedures in facilitating fluent reading and micro-level comprehension.
- Students’ comprehension of the texts was greater under the DRTA condition than KWL and the control conditions. What do you think explains DRTA’s advantage over the KWL condition (p. 382)?
This may be the result of the close reading facilitated by this instructional approach. Although the students in all four groups were monitored during mumble reading to be sure that they could read the text and were, in fact, reading the text, teacher guidance during the DRTA tended to direct the children’s attention to the important ideas and assist with difficult text concepts in a way that was not provided for in the other interventions.
- It was found that the treatments did not differ in the quality and quantity of students’ retellings (p. 384). In other words, students were not differentially affected by the treatments in the way they integrated textual information with prior knowledge. What does this finding mean in terms of the different emphases employed by experience-based (KWL) vs. text-based (DRTA) treatments?
This finding supports and extends the earlier research that indicated that DRTA is effective in promoting inferential and evaluative responses to text. DRTA has several features that recent studies have associated with higher levels of achievement. DRTA procedures tended to demand higher levels of thinking by the students than did the other three procedures by requiring justification and verification of predictions.
- In light of the findings from this study, what conclusions can you draw about the role of teacher support in children’s construction of mental representations from informational text?
I have concluded that teacher support in children’s construction of mental representations of the text is of the utmost importance. The teacher is the one in charge and the one who can gear a child’s thinking when they approach a text. With teacher guidance, the students can focus their attention on the important ideas and will have an easier time understanding difficult text concepts. It is important for teachers to demand higher level cognition in order to encourage the students to think beyond the text.