An Empirical Study on a Computer-Based Corpus Approach to English Vocabulary Teaching and Learning Song Yunxia Sun Zhuo Yang Min Foreign Languages Section of Agriculture Division of Jilin University‚ Changchun 130062 dasera@sima.com Abstract This paper investigates the effectiveness of a computer-based corpus approach to English vocabulary teaching and learning. The empirical study in this paper illustrates that the use of corpus does benefit English vocabulary teaching
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Lab 2: Equipotential Lines and Lines Of Force Purpose: The purpose of this lab is to find the electric current when passing through conductors of different shapes and sizes. Also to gain a general knowledge of the laws governing the flow of current through extended conductors is another objective for this experiment. In this lab we are to experiment with the lines of force and equipotentials. We are also to find out vector field and the relationship between the lines of force and the electric field
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786 Pre-Lab Extraction and Filtration 790 1-1 Mixture Separation 792 1-2 Water Purification 794 3-1 Conservation of Mass 798 4-1 Flame Tests 801 Pre-Lab Gravimetric Analysis 828 13-1 Separation of Pen Inks by Paper Chromatography 830 13-2 Colorimetry and Molarity 834 14-1 Testing Water 838 804 7-1 Separation of Salts by Fractional Crystallization 806 7-2 Naming Ionic Compounds 810 7-3 Determining the Empirical Formula of Magnesium
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timer is how many times the stylus goes through a cycle in a second. So the frequency is the reciprocal of the period‚ and the period is the reciprocal of the frequency. We will calculate the frequency using formula Frequency(f)=number of dots/ time‚ and then calculate the period using formula Period(T)= per unit time/ frequency. Procedure: 1. Follow instructions and assemble the apparatus. 1. Put a carbon paper disc which is carbon-side-up on the fix shaft between the gates. 2. Place a short
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Jeanine Campa Biology 101 10/20/2010 Ecology-Interspecific Interactions Lab Intro: Ecology is the study of how organisms interact within their environment. Every species interacts with its surroundings‚ whether it’s within their populations‚ community‚ ecosystem‚ etc. In this lab‚ we will be comparing two different species and how they grow alone as well as together‚ in the same environment. More specifically‚ in this lab‚ we will be dealing with one of the most important ideas in ecology‚ the
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M19 Lab: Reactance and Impedance Roger Argo ECEN 150 Introduction: Purpose: 1. Practice calculating reactance and impedance. 2. Observe the phase shift between voltage and current caused by reactance and impedance. 3. Learn how to make AC voltage phase shift measurements with an oscilloscope. 4. Become more familiar with laboratory instruments and reading instrument operating manuals. Equipment / Materials 1. 0.1 UF Capacitor 2. 1 Kilo ohm Resistor 3. Oscilloscope 4. Generator
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volume‚ mass‚ and density of objects and liquids. Time Allocation: Allow 2 hours for this experiment Materials Materials Student provides Label or Box/Bag Qty 1 1 1 1 1 LabPaq provides Auxiliary Supplies BagCK1 © Hands On Labs‚ Inc. 1 1 1 1 1 1 1 1 1 1 1 LabPaq CK-1 Item Description Table salt Piece of string Isopropyl (rubbing) alcohol Tap water Paper‚ 5 cm x 5 cm for weighing chemicals Beaker‚ 100 mL‚ glass Cylinder‚ 25 mL 25-mL volumetric flask
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BIOMAGNIFICATION LAB REPORT AIM The aim of this lab is to model bioaccumulation and biomagnification through a food chain. MATERIALS 100 M&M’s Paper towel to lay M&M’s on 20 small cups labelled “zooplankton” 5 medium cups labelled “minnow” 2 larger cups - one labelled “eel #1”‚ and another labelled “eel #2” 1 bowl labelled “osprey” PROCEDURE The pile of M&M’s represents the phytoplankton population in a lake. The printed “M” on the candy represents the amount of DDT (in ppm)
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PR OCEDURE Before beginning‚ set up a data table similar to the Data Table: Experiment Results in the Lab Report Assistant section. This experiment will create a reaction of sodium carbonate and calcium chloride dihydrate to produce a precipitate of calcium carbonate. This formula is: Na2CO3(aq) + CaCl2. 2H2O(aq) à CaCO3(s) + 2NaCl(aq) + 2H2O 1. Put on your goggles. 2. Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL of distilled water and stir to form the calcium
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Kristen Sierman Lab Report: Experiment #7 Group #4 October 16th‚ 2012 Forces on a Pulley System A. Statement of the Problem The purpose of this lab was to address the following questions: how does the acceleration of a pulley system depend on the mass of the driving objects? And how does the acceleration of a pulley system depend on the mass of the driven object? To achieve this‚ a dynamic track was set up with a string attached to a cart. The string was part of a pulley system (the pulley
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