This research aims to solve the basic knowledge problems of undergraduate students who study Calculus 1 for Engineers in the Faculty of Engineering Rajamangala University of Technology Phra Nakhon. Basic Mathematics tutorials are conducted in order to improve their knowledge which leads to increase the efficiency of learning the Calculus 1 for Engineers. The basic mathematics lessons are designed and their efficiency is assessed in the tutored group using the 60/60 criteria. The pretest and posttest are assigned to both tutored and tutorless groups as well as the tutored student satisfactions with thedesigned lessons and the Calculus 1 for Engineers are conducted. The result shows that the efficiency of the designed lessons is 76.60/64.67 which is higher than the criteria; hence they are proper to be used. For the treatment group the posttest grades are higher than the pretest grades significantly (.05) with the effectiveness of 34.67. The comparison of the learning achievement for the Calculus 1 for Engineers shows that the grades of the tutored group are higher than the grades in the tutorless group significantly (.05) as well. The student satisfactions for both the designed lessons and the Calculus 1 for Engineers are at the levels of good and very good.

The purpose of this research was to construct the efficiency of the Computer Assisted Instruction Package for Computer Instructional Package for Drawing 2 Dimension Subject for students in Vocational Certificate Education Level using subject by evaluating the efficiency of the Computer Assisted Instruction Package of the Students to the Computer Assisted Instruction Package for Drawing 2 Dimension Subject with the tools. The sample group was 30 students of Machine Shop Department in Vocational Certificate Education Level Pathumtani Technical College. Analysis by Index of Consistency Level of Difficulty Discrimination Power Average and Computer program. The result of this research was the efficiency 81.14/82.50 higher than the rule of 80/80. This could be concluded that the computer self study packagefor Drawing 2 Dimension Subject using can be used as a learning package efficiently.

A study on developing textile products from fiber lemongrass has been carried out aimed at processing yarn from lemongrass fiber developing textile fabrics such as clothing hats and shoes and teaching product design and technology to a community. Lemongrass leaves were processed with chemicals to produce a fiber lemongrass then spun to 100% lemongrass yarn with large unsmooth surfaces the used to produce handbag hats and shoes. However for garment fabrics the researchers developed the lemongrass yarn for weaving by mixing cotton in a 60:40 ratio to produce hand-woven cloth. Using hand-woven folk wisdom the Takfa community in Nakhon Sawan produced natural dyes from Bengal Almond leaves a performed surface finishing for a smoother touch. After weaving lemongrass fiber cloth gives off a lemongrass odor but this fades gradually. The physical properties of lemongrass fiber cloth are then tested for strength resistance and abrasion. Processing lemongrass cloth fiber to textile products enables us to produce various products such as clothes bags and hats. In passing technology to the community the residents recognized the advantages and benefits of using the fabric. Further research should investigate mixing lemongrass fibers with other natural fibers improved fiber durability luster of the fiber to increase fiber value or using lemongrass fiber for household products.

The aim of this research is to study white and colour resist printing of dye extracted from dry nipa palm shell. The printing recipes and fixation condition were studied in this work. The result of white resist printing showed that 30 % owp of sodium carbonate (Na2CO3) was used to be a resisting agent. The steam fixation for 15 minutes was suitable to show a good white resist printing in whiteness and sharpness of printing pattern. The whiteness value was 35.05. The washing and rubbing fastness were good to very good and light fastness was fair. The tensile strengths of warp and weft directions were decreased to 10.29 % and 4.25 % respectively. The colour resist printing was using Curcuma longa Linn. powder as illuminant dye. The dye was miscible in 30 % owp of sodium carbonate. The colour resist printing results were corresponding as white resist printing results. The 15 minute of steam fixation showed a good colour resist printing. The Curcuma longa Linn dye could be fixed on silk fabric and showed a good colour strength and sharpness of pattern. The washing and rubbing fastness were good to very good. And light fastness was fair. The tensile strengths of warp and weft directions were decreased to 18.37 % and 4.18 % respectively.

The purpose of this research was to study the white resist printing with colour resistant material from flour of wild taro (Colocasia Esculenta (L.) Schott) and using reactive pigment and natural dyes as dyestuffs. Five formulas of printing pastes were applied to light cotton thick cotton and silk fabrics by the use three techniques nauely Silk screen (White resist and colour resist methods)stencil and batik. The optimal ratio of colour resistant materials from flour of wild taro were compose of 20 grams flour of wild taro 32-36 ml. water 30-34 ml. sodium chloride 10-13 ml. calcium hydroxide and 1-4% vegetable oil. The viscosities of printing paste from five recipes were shown in the rage between 559.9-671.9 Centipoise. All five recipes can resist dyestuffs and also easy to remove the flour of wild taro. The pattern at resist printing area of fabrics shows sharpness and whiteness. The colour fastness to washing water and perspiration on cotton and silk fabric results were ranging between poor to fair level when using reactive and natural dyes as dyestuff. However the fastness property of pigment dye shows medium to good level. The colour fastness to rubbing is shown to be in range of 4 to 4-5 for all recipes. The ratings of colour fastness to light in terms of colour change are fair to good (4 to >6).