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Pre-Schematic & Schematic Stages

Transcript: Children in the pre-schematic stage don't pay as much attention to color as they do form; there's not as much meaning for them. With their ability to make forms of their own choosing, it takes priority on their thinking. Starts around 7 and lasts to about 9 years-old In this stage, children develop schema, which is a symbol for what they portray for an object (person, house, etc.) It's the same every time Parents, keep in mind that communication is important! Looks like objects are drawn randomly If you look close enough, you'll be able to see "children conceive space as to what is around them" (Lowenfield, 225). Children can't relate location of objects based on landmarks yet A child will learn spacial concepts by personal involvement. First, let's look at the Pre-Schematic stage. "Although it's not clear how the personal symbol originates, the universality of the circle for the head and the two lines representing legs gives support to the notion that this is somehow biological in nature...all children, either through sight, hand control, or cognitive development, make similar configurations for a person" (Lowenfeld, 223). Encourage short discussion for perceptual growth by pointing things out and you will see it in the drawings! *Basic subject matter stresses an awareness of body parts! Choosing colors is highly individualized MOTIVATE!!! The Way out "Through drawing, a child will begin to develop conceptual growth" (Lowenfeld, 234). This is where visual differentiation and perception begins: The higher the student's differentiation is, the higher their intellectual processes are developed which both increase awareness to the environment The more detailed drawings will be seen Children also start to show their understanding of scale and notice small changes in their figure drawings. Same schema, but eyes, hair, and size are different Meaning of Space: Children start to use BASE LINE, or TRAVEL LINE, creating a relationship between he/she and the environment. What is base line? Children develop concept and their drawings of the head-feet now consist of recognizable figures with clothing instead of just bodies. Emotion (what they feel represents the mood of the object) Psychological meanings such as a crayon being in better condition because it hasn't been used for a paintbrush having a longer handle Children who have developed more intellectually overall are more physically developed. The pre-schematic stage starts around 4 years-old and lasts until around 7. Children begin drawing head-feet representations of how they see people, usually themselves. Demonstrates the beginning of an ordered thought process Have the right atmosphere Child discovers naturally there's a relationship between colors and objects Draws the environment more objectively and uses well developed space relationships Can categorize to group things together (Lowenfeld, 267). Schematic Stage Base Line Drawing Toward the end of the Schematic stage, drawings are increasingly influenced by visual perception. Now for the big turn in events... Kyle Underwood Resource: Lowenfeld, V., & Brittain, W. (1987). Creative and Mental Growth (8th ed.). New York, NY: Macmillan Publishing Company. Color: "Active knowledge reveals understanding of and interest in the environment around and this is what is expressed in drawings" (Lowenfeld, 286). What are the Pre-Schematic & Schematic Stages It's when the student draws along the bottom of the page, illustrating a story and showing the ground; drawing in linear! Children begin to represent something: Drawings as a Reflection of Growth Growth in Drawings:

Schematic Stage

Transcript: Often the sky is a strip of blue at the top of the paper, while the ground is a strip of green at the bottom. Objects are often placed on the ground instead of floating in space. Objects of importance are often drawn larger than objects of lesser importance. Victor Lowenfeld (1903–1960) A schema describes both the mental and physical actions involved in understanding and knowing. Schemas are categories of knowledge that help us to interpret and understand the world. In Piaget's view, a schema includes both a category of knowledge and the process of obtaining that knowledge. As experiences happen, this new information is used to modify, add to, or change previously existing schemas. Creates images that combine a variety of colors, forms, and lines. Can place forms in an orderly arrangement to make designs . Often selects artwork that show families and groups. Can express ideas about personal artwork (e.g., identifies images in a drawing by saying, "This is a picture of my cat and my dog."). Selects ideas for works of art. Seeks to increase independence by trying new activities on his or her own. Schema Victor Lowenfeld (1903–1960) by: Prinz Joseph & Gwen Louise Was a professor of art education at the Pennsylvania State University. Born in Linz, Austria Viktor Lowenfeld had always been drawn to the arts. Through his personal narration. Lowenfeld mentioned that he was pulling toward music at an early age – probably four or five. He started to play violin at the age of nine or ten. And because he used to play from sound, rather than notes, he was often called a “Gypsy.” Child's Development in "CREATIVE ARTS" Visual Arts Jean Piaget Schematic Stage Creative Arts, Music, and Drama for Young Children Schematic Stage (5-6 years old) Children........... He further developed a theory of stages in artistic development. The stages consisted of: The Schematic Stage-(7-9 years old) Dawning Realism; Pseudorealism; and Period of decision Scribble; Preschematic; Schematic; That same year Lowenfeld started painting. This early exposure to the visual and performing arts led him to a career devoted to the practice of education himself and the public in art. Lowenfeld's 1947 Creative and Mental Growth was published and became the single most influential textbook in art education. Many elementary school teacher preparation programs used this book since it described characteristics of child art. Lowenfeld believed evidence of aesthetic, social, physical, intellectual and emotional growth is reflected in the art of children. A child's development in the creative arts varies greatly based on the child's experiences with art, music, dance, and theater. Given exposure and practice, six-year-old use a wider variety of materials to create visual images that combine colors, forms, and lines. For example, a child may have a schema about a type of animal, such as a dog. If the child's sole experience has been with small dogs, a child might believe that all dogs are small, furry, and have four legs. Suppose then that the child encounters a very large dog. The child will take in this new information, modifying the previously existing schema to include this new information. THANK YOU! Children at this stage have clearly assigned shapes to objects that they are attempting to communicate. They often have developed a schema for creating drawings. There is a defined order in the development of the drawing. Drawings at this stage have a clear separation between the sky and the ground. Understanding the stages of artistic development can help you become better at creating art. It can also help you become a more effective art teacher. We develop artistically. Just like we develop other skills like talking and walking in stages, we develop artistic skills in the same way. "Those who can, do; those who can't, teach."

Schematic

Transcript: Pulse Induction Circuit with Voltage Clipper V_IND High speed op-Amp(LM7171) Slew rate: 4100 V/us 1st stage with variable gain experimented with digipot(PART no) for digital gain control could not implement in the circuit due to voltage level incompatibility later use another digipot(PART no) for digital gain control 2nd stage with gain 20 V_TRIGGER Clipping V_CLIPPED V_IND High speed ADC(TLC5540) Modified semi-flash architecture with output per clock Sampling rate: 20MSPS Reference voltage: Top: 5V Bottom: GND Resolution: 8 bits Tested with different gains 110 198 400 Observation Increasing gain improves distance sensitivity However increases noise Two Stage Amplifier Circuit with Variable Gain Analog Circuit Schematic Scaling: Resistor Divider Scaling: Resistor divider Tests: Different Coils Interface to Virtex 5 Level translation buffers 74LVC245 for 5V to 3.3V 74HCT08 for 3.3V to 5V Initially used HEF4050 for 5V to 3.3V had larger switching delay, resulting in glitches solved using 74LVC245 Two Stage Amplifier with Variable gain System Parameters Pulse Width Coil type Amplifier gain ADC resolution Damping resistor Observation detection range around 60cm Results: (Square Coil) Transceiver Coil MOSFET Driver (Pt. no) Power MOSFET(Pt. no) Damping resistor(470 Ohm) Clipping network Zener(7.5V) in series with a PN Diode Tested with different coils: Small column coil, 20 cm column coil, 20 cm planar coil, 20 cm ring coil 45 cm square coil Observation Large coil is better for range extension Small coil is better for detecting smaller objects Scales the output from op-Amp to 0-5 V signal for ADC R22 = 1k R23 = 4.7k out/in = 1/5.7 24V -> 4.21V Test object: Tin Can Gain: 440 Tested for distance from 5 cm to 66 cm Tests: Different Gains A/D Conversion Tests Pulse Induction Circuit with Voltage Clipper

Schematic

Transcript: Exam 3 - Schematic Quinn Zellner-Smith Anna Suazo Research Design #1 One Group Posttest Only Design (One-Shot Case Study): "Administration of a posttest to a single group of participants after they have been given an experimental treatment condition". "We do not know how the participants would have performed without the presence of the independent variable on the dependent variable." "Lacks a treatment control group." "Rarely used by researchers." Problems with the design: One-group Pretest-Posttest Design: Research Design #2 "Treatment condition is interjected between a pretest and a posttest of the dependent variable". "There could be uncontrollable explanations for how the students performed on the questionnaire the second time (e.g. life experiences)". No control group Problems with the design: True Experiment: Research Design #3 "Requires at least two groups, one receiving an experimental treatment and one not. Requires the manipulation of at least one independent variable, the random assignment of participants to groups and the random assignment of treatments to groups". "Able to have more control over extraneous variables". "Control increases if the sample size is larger". Problems with the design: "Still are not completely sure that the groups are equivalent". "There is no pretest to determine if the randomization worked and statistical power decreases." Posttest Only Design W/ Nonequivalent Groups: Research Design #4 "Design in which the performance of an experimental group is compared with a nonequivalent control group at the posttest." "We still do not know if the independent variable is what caused the change in the dependent variable." Problems with the design: Nonequivalent Comparison/Control Group Design: Research Design #5 "Treatment and control group are predetermined by an existing independent variable and not random assignment." "Most common among the quasi-experimental designs." "The participants in each group are not equivalent because there is no random assignment, so there are uncontrollable variables, therefor there are rival hypotheses that could explain the results." Problems with the design: Interrupted Time Series Design: "A quasi-experimental design in which a treatment effect is assessed by comparing the pattern of pre and posttest scores for a single group of research participants." "Researcher gathers multiple measurements of the DV prior to the treatment and then several measurements of the DV after the treatment." "Better design than the one-group pretest posttest design." "The pre and posttest data should be graphed and then visually inspected." "Researcher must find a comparable control group and gather several pre and post test scores from them also." Research Design #6 ABA Design Research Design #7 3 Phases: A. Baseline B. Treatment "Usually continued for the same amount of time as the baseline or until a change is noticed." A. Baseline "Withdrawal: removal of the treatment condition" "Treatment is withdrawn and returned to the same condition as the baseline" "If the effects of the treatment are reversible, then the behavior should return to the way it was prior to the treatment." "Face moral and ethical issues by ending with baseline." "Reversal: if the results do not reverse, then the effectiveness of the treatment may be due to alternative hypotheses." "Some behaviors can not be reverted back to the baseline." Problems with the design: ABAB Design: Research Design #8 4 Phases A. Baseline B. Treatment: "Usually continued for the same amount of time as the baseline or until a change is noticed." A. Baseline: "Treatment is withdrawn and returned to the same conditions as the baseline." B. Treatment: "Treatment condition is reintroduced." Same problems as ABA Design Problems with this design: Multiple Baseline Design: "A single-case design in which the treatment condition is successively administered to several target participants, target outcomes, and target settings." "The change in the dependent variable should appear immediately after the treatment has been administered." Research Design #9 1. "Establish baseline measurement for all the participants, outcomes, or settings." 2. "After the behavior for each has become stable, introduce an intervention for one of them." 3. "Continue this process until each participant, outcome, or setting has received the treatment." Procedure Changing Criteria Design: Research Design #10 "A single-case design in which a participant's behavior is gradually shaped by changing the criterion for successive treatment periods." "Participant is required to "step-up" their performance on the DV." Procedures 1. "Baseline measurements of the DV." 2. "Treatment is introduced for the first time and the initial criterion is set." "The goal is to get the behavior to reach a certain criteria across multiple observations." 3. "Once the first criterion is achieved, move to the next criterion level." "Establish behavior at this level again across multiple

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