Red displays come from Lithium, Rubidium and Strontium. These metals give different intensities in color and some even play other roles. Lithium and Rubidium are metals in group one of the periodic table. Lithium gives a medium red color and is most useful, for this purpose in its carbonate form. Rubidium on the other hand gives a deep red/ violet-red flame and is also used to oxidize the mixtures in these explosives; without oxidation, they will not burn properly. Strontium burns with an intense red but it also has the job of stabilizing the elements used to make the fireworks.
Some of the popular metals for fireworks include: Lithium, Rubidium, Strontium, Copper, Aluminium, Magnesium, Beryllium, Antimony, Titanium and many others. Burning these gives a wide variety of colors and makers of these products combine them based on the type of display they want. Below are specific examples of the different colors given by different elements.
Educational toys are fun for babies and provide another tool to stimulate learning and brain development in your infant. There are many ways to teach a child and tens of thousands of educational toys on the market to help parents in the endeavor. The challenge for parents, child care providers and educators is to choose from the vast array of educational toys available in a way that creates a balance of learning techniques, is age appropriate, and most of all fun. This article will provide basic facts about; how babies learn, types of educational toys available and examples of each.
Teaching profession is devalued in the country because the teachers cant compete in our society, have no muscle power, are educated and hence behave differently. Neither do they have guts of creamy bureaucrats nor institutional support of any kind. A teacher can entertain you with a pale smile on hearing that this is the profession of nation builders, the cream of society and a noble profession. The next moment teacher will be branded as cancers in societal marrow, getting salary for no work, craving for power, equality in salary and status with the Class A government servants. The teacher was the consultant and conscience keeper of society till mid-century. One could identify him by his tattered clothes, emaciated pale face, soft voice and meek behavior. He was the guru. That guru, comparatively having a better outfit now, has metamorphosed to a present teacher.
3 to 6 Months: During this stage your baby will gain better head control and have better movement of arms and legs. They generally grip onto anything they can get their hands on and put it directly into their mouth. Educational toys like rattles promote motor development and provide sensory stimulation. Since everything ends up in the mouth, educational toys that are chewable or soft plush are favorites. Babies need to experience different textures so vary the materials educational toys are made of. Activity centers provide lots of stimulation at this age. These educational toys normally have lots of buttons that produce sounds, lights, and give a variety of textures to explore. Hand-eye coordination will improve as babies explore the activity center. Parents are often on the move more with babies at this age. Activity bars that fit across a stroller, car seat, or bouncy chair that have dangling, squeaky toys and mirrors keep baby stimulated while on the move. Motor skills develop as baby reaches, hits, pulls, and kicks at the accessories on these educational toys.